Certified Orthoptist (CO) Certification Exam — Questions and Answers

Question 1: What is a records management audit in CO?

Computer usage review
Counting filing cabinets
Supplies inventory
Reviewing practices to ensure compliance with policies (Correct answer)

Correct answer: Reviewing practices to ensure compliance with policies

This audit examines how records are created, stored, accessed, retained, and destroyed for compliance.

Question 2: In orthoptic management of accommodative esotropia, bifocal or progressive addition lenses are prescribed to:

Correct anisometropia
Stimulate the amblyopic eye
Increase accommodative effort
Reduce near accommodative demand and the associated convergence excess (Correct answer)

Correct answer: Reduce near accommodative demand and the associated convergence excess

Bifocal or progressive addition lenses reduce near accommodative demand in patients with accommodative esotropia, lessening the convergence excess that drives the near deviation.

Question 3: Which position is generally recommended for a conscious patient in diabetic shock (hypoglycemia) who is still alert enough to swallow?

Prone to prevent aspiration
Seated upright and given oral glucose or juice (Correct answer)
Supine with legs elevated
Lateral recovery position

Correct answer: Seated upright and given oral glucose or juice

An alert hypoglycemic patient who can swallow should be given fast-acting oral carbohydrates while seated to raise blood glucose quickly.

Question 4: Which instrument uses the principle of fogging one eye to measure the accommodative convergence to accommodation (AC/A) ratio?

von Graefe technique at far only
Worth 4-dot at near only
Gradient method with trial lenses (Correct answer)
Synoptophore

Correct answer: Gradient method with trial lenses

The gradient AC/A method uses lenses (typically +1.00 or -1.00 D) to alter accommodation and measures the resultant change in alignment to calculate the ratio.

Question 5: An orthotist notices a pattern of unnecessary referrals from a physician who receives a fee-sharing arrangement. This is prohibited under:

OSHA workplace safety regulations
HIPAA Security Rule
The Stark Law and Anti-Kickback Statute (Correct answer)
Americans with Disabilities Act

Correct answer: The Stark Law and Anti-Kickback Statute

The Stark Law prohibits physician self-referrals for financial gain, and the Anti-Kickback Statute prohibits fee-sharing arrangements that influence referrals.

Question 6: A patient with post-polio syndrome presents with knee hyperextension during stance phase. Which orthotic intervention is most appropriate?

Swedish knee cage
Solid ankle AFO with anterior trim line
Floor-reaction AFO
Knee-ankle-foot orthosis with posterior offset knee joint (Correct answer)

Correct answer: Knee-ankle-foot orthosis with posterior offset knee joint

A KAFO with a posterior offset knee joint places the knee joint axis behind the weight-bearing line, providing a knee extension moment to control genu recurvatum.

Question 7: A teenager discloses to you confidentially that they are being bullied but denies self-harm ideation. Your ethical obligation includes:

Document the disclosure, provide crisis resources, and discuss with the supervising physician about reporting obligations (Correct answer)
Maintain complete confidentiality as the patient is a minor
Ignore the disclosure as it is outside orthoptic scope
Breach confidentiality immediately and call police

Correct answer: Document the disclosure, provide crisis resources, and discuss with the supervising physician about reporting obligations

While strict confidentiality applies absent imminent harm, best practice requires documentation, providing support resources, and multidisciplinary consultation.

Question 8: A patient has difficulty converging their eyes. Which condition is most likely?

Divergence excess
Hyperopia
Convergence insufficiency (Correct answer)
Presbyopia

Correct answer: Convergence insufficiency

Convergence insufficiency is a common binocular vision disorder where the eyes have difficulty turning inward (converging) to maintain single vision when viewing near objects. This often leads to symptoms like eye strain, headaches, blurred vision, or double vision during reading or close work. Divergence excess, conversely, involves difficulty converging.

Question 9: Which of the following best defines informed consent?

Consent obtained from insurance providers
Patient's understanding and voluntary agreement to treatment (Correct answer)
A witness signature for patient procedures
A verbal agreement with the doctor

Correct answer: Patient's understanding and voluntary agreement to treatment

Informed consent is a crucial ethical and legal process where a patient receives all necessary information about a proposed treatment or procedure, including its risks, benefits, alternatives, and prognosis. The patient must then voluntarily agree to the treatment after fully understanding this information, demonstrating their autonomy in healthcare decisions.

Question 10: Stereopsis of 40 seconds of arc corresponds to which clinical level?

Reduced stereopsis seen in amblyopia
Fine (central) stereopsis consistent with normal binocular vision (Correct answer)
Gross stereopsis only
Peripheral stereopsis

Correct answer: Fine (central) stereopsis consistent with normal binocular vision

40 arcsec is near-normal fine stereoacuity, consistent with intact bifoveal binocular vision.

Question 11: What is a needs assessment in CO Infection Control & Prevention practice?

Office supply list
Identifying gaps between current conditions and desired outcomes (Correct answer)
Benefits survey
Property appraisal

Correct answer: Identifying gaps between current conditions and desired outcomes

A needs assessment identifies gaps between current performance and desired outcomes to justify improvements.

Question 12: What is the first step in CO risk assessment?

Ignoring minor risks
Assigning blame
Identifying potential hazards and threats (Correct answer)
Purchasing insurance

Correct answer: Identifying potential hazards and threats

Risk assessment begins with systematic identification of all potential hazards, forming the foundation for all subsequent analysis.

Question 13: What is a key component of professional behavior in clinical practice?

Demonstrating professionalism and ethics (Correct answer)
Avoiding patient questions
Flexibility in documentation
Taking shortcuts during exams

Correct answer: Demonstrating professionalism and ethics

Professionalism and ethics are foundational to clinical practice, encompassing qualities like integrity, respect, accountability, and adherence to ethical guidelines. Demonstrating these attributes ensures high-quality patient care, maintains public trust, and upholds the standards of the orthoptic profession.

Question 14: Compared to hand magnifiers, spectacle-mounted magnifiers offer the primary advantage of:

Hands-free use for sustained near tasks (Correct answer)
No adaptation period required
Greater working distance from the page
Lower cost and portability

Correct answer: Hands-free use for sustained near tasks

Spectacle-mounted magnifiers provide hands-free magnification, allowing patients to use both hands freely for near tasks such as reading or craftwork.

Question 15: Which of the following best describes the purpose of a sentinel event review in an orthotics practice?

To inform patients of staff performance issues
To assign blame and discipline involved staff
To document events for insurance billing purposes
To analyze root causes and prevent recurrence of serious adverse events (Correct answer)

Correct answer: To analyze root causes and prevent recurrence of serious adverse events

Sentinel event reviews use root cause analysis to identify systemic factors contributing to serious incidents and implement process improvements to prevent recurrence.

Question 16: A patient explicitly refuses to pay for services rendered. An orthotist may ethically:

Withhold the completed device indefinitely as leverage
Publicly post the patient's name on the clinic website as a warning to others
Deny future care for any condition as a penalty
Pursue standard collection procedures while maintaining patient dignity (Correct answer)

Correct answer: Pursue standard collection procedures while maintaining patient dignity

Practitioners may use standard legal collection processes but must do so without violating patient privacy, dignity, or access to urgent care.

Question 17: What is the best practice when documenting patient information?

Wait until the end of the week to document
Rely on memory for later entries
Record information accurately and immediately (Correct answer)
Use abbreviations only

Correct answer: Record information accurately and immediately

Accurate and immediate documentation is critical in healthcare for patient safety, continuity of care, and legal reasons. Recording information promptly ensures that details are not forgotten or misinterpreted, provides an up-to-date record for all healthcare providers, and supports evidence-based decision-making.

Question 18: An orthotist receives a referral to fabricate a cervical orthosis for a patient with an acute unstable cervical fracture. The orthosis has not yet been fabricated. During an interim evaluation visit, the patient removes their current cervical collar without assistance. The orthotist's priority action is:

Document the event and proceed with the evaluation
Educate the patient about proper collar removal technique
Quickly reapply the collar and contact the referring physician (Correct answer)
Reassess the fracture level before proceeding

Correct answer: Quickly reapply the collar and contact the referring physician

Unauthorized removal of a cervical collar in a patient with an unstable fracture poses immediate risk of spinal cord injury; the collar must be reapplied and the physician notified urgently.

Question 19: Which treatment is first-line for convergence insufficiency in a school-age child?

Patching the dominant eye
Base-in prism glasses for all tasks
Office-based vergence/accommodative therapy supplemented with home exercises (Correct answer)
Bilateral medial rectus recession surgery

Correct answer: Office-based vergence/accommodative therapy supplemented with home exercises

The CITT trial showed that office-based vergence/accommodative therapy is significantly more effective than home exercises or prism glasses alone for convergence insufficiency.

Question 20: The simultaneous prism and cover test (SPCT) measures:

The total deviation including phoria
Vergence amplitude
Only the tropia component, excluding the phoria (Correct answer)
Torsional deviation only

Correct answer: Only the tropia component, excluding the phoria

SPCT applies the prism simultaneously with the cover so the eye does not refixate; it therefore measures only the manifest (tropia) component.

Question 21: What is a milestone in CO project management?

A daily required task
A significant event marking progress at a key point in the timeline (Correct answer)
A physical construction marker
An optional checkpoint

Correct answer: A significant event marking progress at a key point in the timeline

Milestones are significant checkpoints marking completion of major deliverables or phase transitions.

Question 22: Which cleaning step must ALWAYS be performed before disinfecting an orthotic device or work surface?

Removing gross soil and debris with soap and water or detergent (Correct answer)
Rinsing with sterile water
Applying the disinfectant at double concentration
Drying thoroughly with a sterile towel

Correct answer: Removing gross soil and debris with soap and water or detergent

Organic matter inactivates many disinfectants, so removing gross soil first is essential for disinfection to be effective.

Question 23: What is the critical path in CO project scheduling?

The longest sequence of dependent tasks determining minimum duration (Correct answer)
The shortest route to complete cheaply
The most expensive phase
Tasks that can be skipped

Correct answer: The longest sequence of dependent tasks determining minimum duration

The critical path identifies the longest chain of dependent tasks; delays on these directly delay project completion.

Question 24: How should an orthoptist handle a patient complaint about discomfort during an exam?

Listen and respond with empathy (Correct answer)
Blame another staff member
Ignore and continue the exam
Dismiss the concern

Correct answer: Listen and respond with empathy

When a patient expresses discomfort, it is essential for an orthoptist to stop, listen attentively, and respond with empathy. Acknowledging their feelings, explaining the procedure, and making adjustments if possible helps to build trust, alleviate anxiety, and ensure the patient feels heard and respected.

Question 25: The AC/A ratio is BEST measured clinically using which method?

Heterophoria (gradient) method with +3.00 lens at 6 m (Correct answer)
Prism cover test at 33 cm minus 6 m deviation
Near point of convergence testing
Synoptophore gradient method

Correct answer: Heterophoria (gradient) method with +3.00 lens at 6 m

The gradient AC/A method measures the change in deviation induced by a +3.00 or -3.00 lens at a fixed distance, isolating accommodative convergence.

Question 26: Under HIPAA, a patient requests their orthotic medical records. The orthotist must provide the records within how many days?

30 days (with one possible 30-day extension) (Correct answer)
60 days
10 days
90 days

Correct answer: 30 days (with one possible 30-day extension)

HIPAA requires covered entities to provide patients access to their records within 30 days, with one permitted 30-day extension if needed.

Question 27: What is the most common type of strabismus in children?

Esotropia (Correct answer)
Hypertropia
Exotropia
Hypotropia

Correct answer: Esotropia

Esotropia, an inward turning of one or both eyes, is the most common type of strabismus found in children. It can be constant or intermittent and often presents early in life. Early detection and treatment are crucial to prevent amblyopia and ensure proper visual development.

Question 28: The Worth 4-dot test uses which colors to assess binocular fusion?

Red, green, blue, white
Blue, yellow, and red
Green, white, and yellow
Red, green, and white (Correct answer)

Correct answer: Red, green, and white

The Worth 4-dot test uses two green dots, one red dot, and one white dot, viewed through red-green glasses to assess binocular fusion.

Question 29: A certified orthotist is evaluating a patient with scoliosis. Which measurement is essential when determining Cobb angle severity?

Angle between endplates of the most tilted vertebrae (Correct answer)
Sagittal plane curvature at L4-L5
Rib hump height in centimeters
Distance between ASIS landmarks

Correct answer: Angle between endplates of the most tilted vertebrae

The Cobb angle is measured as the angle between lines drawn along the endplates of the most tilted vertebrae above and below the curve apex.

Question 30: A patient in your waiting room collapses and becomes unresponsive. As a healthcare professional, your FIRST action should be:

Document the incident before acting
Call the ophthalmologist to assess ocular injuries
Ask bystanders to move the patient outside
Activate the emergency response system and begin CPR if no pulse (Correct answer)

Correct answer: Activate the emergency response system and begin CPR if no pulse

Activation of emergency services and initiation of CPR per BLS protocol takes priority in any cardiac or respiratory arrest situation.

Question 31: Which nerve is assessed by testing sensation on the dorsal web space between the first and second toes?

Superficial peroneal (fibular) nerve
Sural nerve
Tibial nerve
Deep peroneal (fibular) nerve (Correct answer)

Correct answer: Deep peroneal (fibular) nerve

The deep peroneal nerve provides sensory innervation to the dorsal first web space and motor innervation to the anterior compartment muscles.

Question 32: Why is accurate documentation important in CO?

Only for bureaucratic purposes
It supports decision-making, compliance, and legal defensibility (Correct answer)
Only for medical/legal fields
No impact on quality

Correct answer: It supports decision-making, compliance, and legal defensibility

Accurate documentation supports quality assurance, compliance, legal defensibility, and knowledge continuity.

Question 33: What is the correct hand hygiene protocol before examining a patient?

Wash hands for at least 20 seconds (Correct answer)
Wash only if visible dirt is present
Rinse hands without soap
Use gloves instead of washing hands

Correct answer: Wash hands for at least 20 seconds

Proper hand hygiene is the single most effective way to prevent the spread of infections in a healthcare setting. Washing hands thoroughly with soap and water for at least 20 seconds, or using an alcohol-based hand rub, is the standard protocol recommended by health organizations before and after patient contact to ensure patient and practitioner safety.

Question 34: During the cover-uncover test, the covered eye moves outward when uncovered. This indicates:

Hypertropia
Hypotropia
Esotropia (Correct answer)
Exotropia

Correct answer: Esotropia

An outward refixation movement on uncovering means the eye was deviated inward (esotropia) under the cover.

Question 35: The double Maddox rod test is used to assess:

Aniseikonia
Stereoacuity threshold
Cyclodeviation (torsion) (Correct answer)
Horizontal fusional vergence amplitudes

Correct answer: Cyclodeviation (torsion)

The double Maddox rod test quantifies excyclotorsion or incyclotorsion by measuring the angle required to realign the two horizontal streaks.

Question 36: Low vision is generally defined as best-corrected visual acuity of:

Less than 20/200 exclusively
Better than 20/40
20/40 in either eye
20/70 or worse in the better eye (Correct answer)

Correct answer: 20/70 or worse in the better eye

Low vision is defined as best-corrected visual acuity of 20/70 or worse in the better eye that cannot be improved with standard optical correction.

Question 37: What is informed consent in CO professional practice?

Third-party consent
Verbal agreement only
Providing complete information about services, risks, and alternatives for voluntary decisions (Correct answer)
Having clients sign without explanation

Correct answer: Providing complete information about services, risks, and alternatives for voluntary decisions

Informed consent requires clear, complete information about proposed services, risks, outcomes, and alternatives so clients can make knowledgeable decisions.

Question 38: An orthotist is treating a minor patient. Regarding documentation of informed consent, which statement is correct?

Consent must be obtained from a parent or legal guardian and documented in the record (Correct answer)
No consent documentation is needed for minors
The minor must sign all consent forms independently
Verbal consent from the minor is sufficient for the record

Correct answer: Consent must be obtained from a parent or legal guardian and documented in the record

For minor patients, informed consent must be obtained from a parent or legal guardian, and this authorization must be documented in the medical record.

Question 39: An orthotist sustains a needlestick injury while working with a patient of unknown HIV status. What is the FIRST immediate action?

Start post-exposure prophylaxis immediately
Test the patient for HIV
Report the incident to the supervisor
Wash the wound thoroughly with soap and water (Correct answer)

Correct answer: Wash the wound thoroughly with soap and water

Immediate wound washing with soap and water is the first first-aid step after a needlestick; reporting and PEP evaluation follow.

Question 40: When taking a lower extremity casting measurement, the patient's knee should be positioned at approximately 90 degrees of flexion to:

Increase venous return during the casting process
Isolate the soleus and allow neutral ankle positioning without gastrocnemius influence (Correct answer)
Relax the plantar fascia and reduce arch height
Ensure the tibia is perpendicular for accurate mediolateral measurements

Correct answer: Isolate the soleus and allow neutral ankle positioning without gastrocnemius influence

With the knee at 90 degrees, the gastrocnemius is slackened, allowing the soleus to be assessed independently and the ankle to be positioned neutrally without gastrocnemius restriction.

Question 41: Whistleblower protections under the False Claims Act are relevant to orthotists who:

Report fraudulent Medicare or Medicaid billing by their employer (Correct answer)
Disagree with a colleague's clinical technique
File an insurance claim after the allowed submission period
Miss a continuing education deadline

Correct answer: Report fraudulent Medicare or Medicaid billing by their employer

The False Claims Act protects employees who report healthcare fraud against government payers from employer retaliation.

Question 42: A patient requests their orthoptic records to send to a specialist. Under HIPAA, you must comply:

Only after the specialist requests the records directly
Only if the treating ophthalmologist approves
Within 60 days, with one 30-day extension if documented (Correct answer)
Within 30 days of the patient's written request

Correct answer: Within 60 days, with one 30-day extension if documented

HIPAA mandates record release within 30 days, with a possible 30-day extension if the covered entity notifies the patient in writing.

Question 43: A patient requires a cervical orthosis following a C5 fracture that is deemed stable. Which device provides the MOST appropriate immobilization for this scenario?

Halo vest
Philadelphia collar
Cervicothoracic orthosis (CTO) (Correct answer)
Soft foam cervical collar

Correct answer: Cervicothoracic orthosis (CTO)

A cervicothoracic orthosis provides superior immobilization compared to cervical-only collars by incorporating thoracic fixation, appropriate for stable mid-cervical fractures.

Question 44: Social media use by orthotists raises which primary ethical concern?

Posting patient cases without explicit consent violates confidentiality (Correct answer)
Online reviews cannot be trusted as marketing tools
It is prohibited by all state licensing boards
It may increase referrals inappropriately

Correct answer: Posting patient cases without explicit consent violates confidentiality

Sharing patient cases or photos on social media without written consent violates patient confidentiality and HIPAA regulations.

Question 45: A right CN IV palsy typically causes the right eye to be:

Hypertropic, with compensatory head tilt to the left (Correct answer)
Hypertropic, with the head tilted to the right
Esotropic with an upgaze limitation
Exotropic and hypotropic

Correct answer: Hypertropic, with compensatory head tilt to the left

A right CN IV palsy causes right hypertropia; the patient tilts the head to the left (away from the affected side) to reduce diplopia.

Question 46: The Humphrey 24-2 visual field test uses a grid of test points separated by:

6 degrees (Correct answer)
3 degrees
10 degrees
1 degree

Correct answer: 6 degrees

The Humphrey 24-2 test pattern places test points on a 6-degree grid within the central 24 degrees of the visual field.

Question 47: The synoptophore is used clinically to measure:

Intraocular pressure
Angle of deviation and grades of binocular vision simultaneously (Correct answer)
Corneal topography
Retinal nerve fiber layer thickness

Correct answer: Angle of deviation and grades of binocular vision simultaneously

The synoptophore measures the objective angle of strabismus and assesses simultaneous perception, fusion, and stereopsis.

Question 48: The 4-prism diopter base-out test is used to detect:

Central suppression scotoma (Correct answer)
Angle kappa
Stereoblindness in adults
Fusional vergence range

Correct answer: Central suppression scotoma

A 4 PD base-out prism placed before one eye normally induces a versional movement; absence of the expected refixation indicates a central suppression scotoma.

Question 49: Which type of microorganism is MOST resistant to standard disinfection and requires sterilization to eliminate?

Non-enveloped viruses
Bacterial endospores (Correct answer)
Gram-negative bacteria
Enveloped viruses

Correct answer: Bacterial endospores

Bacterial endospores (e.g., Bacillus, Clostridium) are the most resistant to disinfection and require sterilization for destruction.

Question 50: A child presents with a left hypotropia that increases in right gaze and with right head tilt. By the Parks three-step test, the paretic muscle is most likely the:

Left inferior rectus
Right inferior oblique
Left superior oblique (Correct answer)
Right superior rectus

Correct answer: Left superior oblique

Step 1 (left hypo = right hyper) → right-side depressors or left-side elevators; Step 2 (worse in right gaze) → right SO or right IR; Step 3 (worse on right tilt) → right SO confirmed.

Question 51: A child's custom KAFO has EVA foam padding that cannot be removed for disinfection. What is the safest infection control approach?

Assign the device exclusively to one patient and clean accessible surfaces (Correct answer)
Spray with high-level disinfectant and let air dry
Immerse in 10% formalin solution
Autoclave the entire device monthly

Correct answer: Assign the device exclusively to one patient and clean accessible surfaces

Non-removable porous components should be dedicated to a single patient with cleaning of accessible hard surfaces between uses.

Question 52: Deprivation amblyopia, caused by conditions such as congenital cataracts, is the MOST severe form because:

It only occurs in bilateral cases
It completely deprives the visual cortex of form vision during the critical period (Correct answer)
It affects only the peripheral visual field
It is easily reversed with patching alone

Correct answer: It completely deprives the visual cortex of form vision during the critical period

Deprivation amblyopia is most severe because form vision is completely blocked during the critical sensitive period, causing profound cortical underrepresentation.

Question 53: An orthotist witnesses a patient suffer a stroke (sudden facial drooping, arm weakness, and slurred speech). How long does evidence suggest that rapid treatment can significantly improve outcomes?

Within one week with inpatient rehabilitation
Within 4.5 hours of symptom onset for thrombolytic therapy (Correct answer)
Within 24 hours of symptom onset
Within 12 hours if the patient remains stable

Correct answer: Within 4.5 hours of symptom onset for thrombolytic therapy

Thrombolytic therapy (tPA) for ischemic stroke is most effective and guideline-recommended within 4.5 hours of symptom onset, making every minute critical.

Question 54: A patient prescribed opioid analgesics for chronic back pain presents for spinal orthosis fitting. Which consideration is MOST clinically relevant?

Pain relief from opioids eliminates the need for a spinal orthosis
Opioids cause bone softening that changes TLSO design parameters
Sedation and reduced proprioception may affect tolerance and compliance (Correct answer)
Opioids increase muscle spasm, requiring a more rigid TLSO

Correct answer: Sedation and reduced proprioception may affect tolerance and compliance

Opioid-induced sedation and reduced proprioceptive awareness may impair the patient's ability to report orthotic discomfort and affect compliance with wearing schedules.

Question 55: When assessing skin integrity prior to fitting a patient with a total contact cast (TCC), which skin condition is a relative contraindication?

Active cellulitis with induration and warmth (Correct answer)
Shallow grade 1 pressure ulcer on the heel
Superficial maceration between toes
Mild xerosis (dry skin) on the dorsum

Correct answer: Active cellulitis with induration and warmth

Active cellulitis with induration requires antibiotic treatment before total contact casting to avoid sealing in an active infection.

Question 56: A patient's treatment plan documents a goal of 'independent ambulation with AFO on level surfaces for 200 feet without rest.' This goal is an example of which goal-writing best practice?

SMART goal — Specific, Measurable, Achievable, Relevant, and Time-limited (Correct answer)
Vague and unmeasurable goal
Physician-determined outcome outside orthotist scope
An administrative billing descriptor

Correct answer: SMART goal — Specific, Measurable, Achievable, Relevant, and Time-limited

This goal is specific (level surfaces, AFO), measurable (200 feet without rest), and functionally relevant, meeting SMART goal criteria.

Question 57: An orthotist disagrees with a prescription written by a physician but proceeds without discussion to avoid conflict. This approach fails which ethical standard?

Supervision of support staff
Maintaining equipment calibration records
Proper billing and coding
Advocacy and interprofessional communication for patient benefit (Correct answer)

Correct answer: Advocacy and interprofessional communication for patient benefit

Orthotists have an ethical duty to advocate for patients by communicating clinical concerns to referring providers rather than ignoring them.

Question 58: A patient requests a copy of their orthotic fitting records to share with another provider. Under HIPAA, the orthotist must:

Charge a significant fee to discourage the transfer
Obtain written permission from the referring physician first
Deny the request to protect proprietary fitting data
Provide the records within a reasonable timeframe as required by law (Correct answer)

Correct answer: Provide the records within a reasonable timeframe as required by law

HIPAA grants patients the right to access and receive copies of their own health records in a timely manner.

Question 59: In the treatment protocol for a patient with a distal radius fracture managed conservatively, when is it appropriate to transition from a wrist immobilization splint to a functional orthosis?

Immediately after injury to prevent pain
Only after complete restoration of grip strength
Not until 6 months post-injury
After radiographic evidence of healing (typically 6-8 weeks) (Correct answer)

Correct answer: After radiographic evidence of healing (typically 6-8 weeks)

Transition to a functional orthosis occurs after radiographic confirmation of fracture healing, typically at 6-8 weeks, allowing progressive mobilization while protecting the wrist.

Question 60: Which informed consent element is MOST critical before performing a Worth 4-Dot test on a pediatric patient?

Genetic history disclosure
Explanation of the test purpose to the child in age-appropriate language (Correct answer)
Consent from both parents simultaneously
Written consent signed by the patient

Correct answer: Explanation of the test purpose to the child in age-appropriate language

Assent from the child with parental consent requires explaining the procedure in developmentally appropriate terms to maximize cooperation.

Question 61: A patient with a C6 complete SCI is being evaluated for upper extremity orthoses. Which functional motion would the orthotist expect to be present?

Active wrist extension with absent finger function (Correct answer)
Active wrist flexion and finger extension
Full hand grasp and release
Active shoulder abduction only above 90 degrees

Correct answer: Active wrist extension with absent finger function

C6 SCI preserves wrist extensors (ECRL/ECRB) but results in absent intrinsic hand function, making tenodesis grasp via wrist extension the primary functional strategy.

Question 62: For a patient with intermittent exotropia, the distance deviation is 30 PD and the near deviation is 10 PD. This pattern is MOST consistent with:

Basic intermittent exotropia
Convergence insufficiency type intermittent exotropia
Divergence excess type intermittent exotropia (Correct answer)
Simulated divergence excess

Correct answer: Divergence excess type intermittent exotropia

Divergence excess type is characterized by a deviation at distance significantly larger than at near (typically ≥10 PD difference).

Question 63: A patient has a left hypertropia measuring 8 PD in primary position. The Parks three-step test helps identify the paretic muscle. In step two, the deviation is LARGER in right gaze. This implicates a cyclovertical muscle that acts in right gaze. Which pair is now suspect?

Right superior rectus and left inferior oblique (Correct answer)
Right inferior rectus and left superior oblique
Right inferior oblique and left superior rectus
Right superior oblique and left inferior rectus

Correct answer: Right superior rectus and left inferior oblique

Step 1 (left hypertropia) implicates RS/LIO/LSO/RIO; step 2 (worse in right gaze) narrows to RSR or LIO, acting in adduction/abduction respectively.

Question 64: Eccentric viewing training teaches patients with a central scotoma to:

Ignore the blind area completely
Improve fixation by patching the fellow eye
Read exclusively with high-power magnification
Use an intact peripheral retinal area as the preferred retinal locus (PRL) (Correct answer)

Correct answer: Use an intact peripheral retinal area as the preferred retinal locus (PRL)

Eccentric viewing training helps patients with central scotoma develop a preferred retinal locus in intact peripheral retina as a functional substitute for the damaged fovea.

Question 65: Which test best quantifies the angle of deviation in a patient who cannot fixate with either eye?

Krimsky test (Correct answer)
Maddox rod test
Four-prism diopter base-out test
Hirschberg test

Correct answer: Krimsky test

The Krimsky test uses prisms over the deviating eye to center the corneal light reflex, estimating the angle when fixation is poor.

Question 66: The critical period for amblyopia treatment is primarily defined by:

The child's cooperation level
Neural plasticity of the visual cortex (Correct answer)
The severity of strabismus
The degree of refractive error

Correct answer: Neural plasticity of the visual cortex

The critical period for amblyopia treatment is defined by the period of neural plasticity in the visual cortex during which visual development can be influenced.

Question 67: An orthotist notices that a patient's edematous limb fluctuates significantly throughout the day. After reviewing the medication list, which drug is MOST likely contributing?

Atorvastatin (statin)
Metformin
Lisinopril (ACE inhibitor)
Amlodipine (calcium channel blocker) (Correct answer)

Correct answer: Amlodipine (calcium channel blocker)

Calcium channel blockers like amlodipine cause peripheral vasodilation and dependent edema that commonly fluctuates with posture and time of day, directly complicating orthotic fit.

Question 68: An orthotist learns during a fitting that a patient is experiencing domestic abuse. The MOST appropriate action is to:

Ignore the information to preserve the therapeutic relationship
Provide information about resources and follow mandatory reporting laws where applicable (Correct answer)
Document nothing to avoid legal liability
Immediately contact law enforcement without informing the patient

Correct answer: Provide information about resources and follow mandatory reporting laws where applicable

Practitioners have an ethical duty to connect patients with resources and comply with mandatory reporting laws while maintaining a supportive approach.

Question 69: Which of the following vital signs in an adult patient at an orthotics clinic warrants immediate referral to emergency services?

Respiratory rate of 28 breaths per minute at rest with accessory muscle use (Correct answer)
Blood pressure 118/76 mmHg
Heart rate 102 bpm during ambulation with a new prosthesis
Temperature of 37.2°C (99°F)

Correct answer: Respiratory rate of 28 breaths per minute at rest with accessory muscle use

A resting respiratory rate of 28 breaths/min with accessory muscle use indicates respiratory distress, which is a medical emergency.

Question 70: A patient with a right superior oblique palsy will most likely adopt which compensatory head posture?

Head tilt to the right, chin up
Face turn to the left
Head tilt to the left, chin down (Correct answer)
Face turn to the right

Correct answer: Head tilt to the left, chin down

In right SO palsy, patients tilt their head to the left shoulder to reduce the hyperdeviation caused by the palsied muscle.

Question 71: An orthotist notices a patient's custom foot orthosis has visible mold growth. What is the FIRST action to take?

Soak in dilute bleach for 10 minutes then refit
Wipe with 70% isopropyl alcohol and return to patient
Sterilize the device in an autoclave
Quarantine the device and assess it for disposal (Correct answer)

Correct answer: Quarantine the device and assess it for disposal

Visibly contaminated devices should be quarantined and evaluated for disposal before considering any reprocessing.

Question 72: Which clinical test can differentiate a true Brown syndrome from an inferior oblique palsy?

Worth 4-dot test at near
Cover-uncover test in primary position
Forced duction test in the field of the inferior oblique (Correct answer)
Maddox rod at 6 m

Correct answer: Forced duction test in the field of the inferior oblique

In Brown syndrome, forced duction is positive (restriction) in the superotemporal direction; in IO palsy, forced duction is negative.

Question 73: The ABC Code of Ethics requires orthotists to maintain competence through:

Hiring experienced staff only
Ongoing continuing education and professional development (Correct answer)
Limiting practice to procedures performed more than 100 times
Annual peer review of all cases

Correct answer: Ongoing continuing education and professional development

The ABC Code of Ethics mandates that practitioners maintain and expand competence through continuing education throughout their career.

Question 74: Which of the following is a surgical treatment for strabismus?

Trabeculectomy
Cataract extraction
Strabismus muscle surgery (Correct answer)
Laser photocoagulation

Correct answer: Strabismus muscle surgery

Strabismus muscle surgery is a common surgical treatment for strabismus. It involves adjusting the length or position of the extraocular muscles that control eye movement to realign the eyes. The goal is to improve ocular alignment, restore binocular vision, and enhance cosmetic appearance.

Question 75: An anaphylactic reaction in a patient allergic to latex occurs during orthotic fabrication. Which intervention is most critical?

Give the patient oral diphenhydramine and observe
Remove the latex item and apply ice to the contact area
Administer epinephrine via auto-injector and call 911 (Correct answer)
Apply topical antihistamine cream to the affected skin

Correct answer: Administer epinephrine via auto-injector and call 911

Anaphylaxis requires immediate epinephrine administration and activation of EMS because it can be rapidly life-threatening.

Question 76: The Worth 4-Dot test primarily assesses:

Stereoacuity in arc seconds
Binocular sensory fusion and suppression (Correct answer)
Color vision deficiency
Contrast sensitivity

Correct answer: Binocular sensory fusion and suppression

The Worth 4-Dot test evaluates binocular sensory fusion and detects suppression or diplopia at distance and near.

Question 77: Which of the following is considered a clinical procedure in orthoptics?

Skin allergy testing
Alternate cover test (Correct answer)
Tympanic temperature reading
Auscultation of chest sounds

Correct answer: Alternate cover test

The alternate cover test is a fundamental orthoptic procedure used to detect and measure the presence and magnitude of a tropia (manifest deviation) or phoria (latent deviation) of the eyes. It directly assesses ocular alignment and binocular vision, making it a core clinical skill for orthoptists.

Question 78: When documenting a patient's informed consent for a new orthotic device, which element is MOST critical to record?

The name of the referral source
The exact cost and insurance coverage details
That the patient was informed of risks, benefits, and alternatives (Correct answer)
The brand and model number of the device

Correct answer: That the patient was informed of risks, benefits, and alternatives

Informed consent documentation must confirm that the patient received and understood information about risks, benefits, and alternatives to make an autonomous decision.

Question 79: Which of the following is a contraindication to placing an orthotic patient in the Trendelenburg (legs elevated) position after syncope?

Dehydration-related fainting
Vasovagal syncope
Heat exhaustion
Suspected spinal injury (Correct answer)

Correct answer: Suspected spinal injury

Trendelenburg position is contraindicated when a spinal injury is suspected because moving the patient could worsen neurological damage.

Question 80: During a clinical encounter, an interpreter is needed for a non-English-speaking patient. Which interpreter arrangement is LEAST appropriate?

Trained in-person hospital interpreter
Certified medical interpreter via video remote service
The patient's 8-year-old child (Correct answer)
A certified telephone interpreter service

Correct answer: The patient's 8-year-old child

Using minor children as interpreters is inappropriate because it burdens the child, compromises accuracy, and violates privacy by exposing minors to adult medical details.

Question 81: A patient from a different cultural background refuses a recommended orthotic device for religious reasons. The orthotist should:

Document the refusal, respect the patient's autonomy, and explore culturally acceptable alternatives (Correct answer)
Contact the patient's family to override the decision
Discharge the patient from care immediately
Proceed with the treatment despite the refusal

Correct answer: Document the refusal, respect the patient's autonomy, and explore culturally acceptable alternatives

Respecting cultural and religious beliefs is part of patient-centered care, and practitioners must honor informed refusal while documenting it.

Question 82: According to the CITT study, the most effective evidence-based treatment for convergence insufficiency is:

Office-based vision therapy combined with home exercises (Correct answer)
Patching the dominant eye
Base-in prism glasses alone
Bifocal lenses only

Correct answer: Office-based vision therapy combined with home exercises

The CITT (Convergence Insufficiency Treatment Trial) demonstrated that office-based vision therapy with home reinforcement is superior to home-based exercises alone or prism glasses.

Question 83: A bitemporal hemianopia with a central scotoma in one eye suggests which lesion?

Junctional scotoma from anterior chiasmal lesion (Correct answer)
Occipital lobe infarction
Lateral geniculate body lesion
Dorsal midbrain syndrome

Correct answer: Junctional scotoma from anterior chiasmal lesion

A junctional scotoma (one central scotoma + contralateral superior temporal defect) indicates a lesion at the junction of the optic nerve and chiasm.

Question 84: Which pattern of optic disc appearance is expected in a patient with longstanding increased intracranial pressure?

Morning glory disc anomaly
Tilted discs
Disc pallor with cupping
Bilateral disc edema (papilledema) (Correct answer)

Correct answer: Bilateral disc edema (papilledema)

Papilledema—bilateral optic disc swelling—is the hallmark of raised intracranial pressure transmitted along the optic nerve sheaths.

Question 85: The fovea centralis contains predominantly which type of photoreceptors?

Cones only (Correct answer)
Rods only
Ganglion cells only
Equal numbers of rods and cones

Correct answer: Cones only

The fovea centralis is packed exclusively with cone photoreceptors, providing maximum visual acuity and color discrimination in bright light.

Question 86: An orthoptist is asked by a pharmaceutical company to enroll patients in a clinical trial. The primary ethical requirement before enrollment is:

Approval from the pharmaceutical company's legal team
Agreement from the supervising ophthalmologist alone
Institutional Review Board approval and proper informed consent from each patient (Correct answer)
No special requirements if the study is observational

Correct answer: Institutional Review Board approval and proper informed consent from each patient

All human subjects research requires IRB oversight and full informed consent per the Declaration of Helsinki and federal regulations (45 CFR 46).

Question 87: A child presents with a white pupillary reflex (leukocoria). Which condition is MOST important to rule out immediately?

Duane syndrome
Convergence insufficiency
Accommodative esotropia
Retinoblastoma (Correct answer)

Correct answer: Retinoblastoma

Leukocoria is a red flag sign that must prompt urgent evaluation to exclude retinoblastoma, a life-threatening intraocular malignancy in children.

Question 88: Stereoacuity of 40 seconds of arc measured with the Randot test indicates:

Monocular depth cue reliance
Fine stereopsis consistent with bifoveal fusion (Correct answer)
Gross stereopsis only
Suppression of one eye

Correct answer: Fine stereopsis consistent with bifoveal fusion

40 seconds of arc is considered fine stereopsis and is consistent with intact bifoveal fusion and normal binocular vision.

Question 89: Which type of isolation precaution is required when treating a patient with active pulmonary tuberculosis?

Contact precautions
Standard precautions only
Droplet precautions
Airborne precautions (Correct answer)

Correct answer: Airborne precautions

Pulmonary tuberculosis is transmitted via airborne droplet nuclei, requiring airborne precautions including N95 respirators and negative-pressure rooms.

Question 90: In electronic health records (EHR), which action constitutes a breach of medical record integrity?

Reviewing records only for assigned patients
Copying and pasting a previous visit note without updating patient-specific findings (Correct answer)
Logging out after each session
Using a unique login credential

Correct answer: Copying and pasting a previous visit note without updating patient-specific findings

Copy-pasting prior notes without updating creates inaccurate records and constitutes cloning, which is fraudulent and violates documentation standards.

Question 91: What is the first step in CO risk assessment?

Ignoring minor risks
Purchasing insurance
Assigning blame
Identifying potential hazards and threats (Correct answer)

Correct answer: Identifying potential hazards and threats

Risk assessment begins with systematic identification of all potential hazards, forming the foundation for all subsequent analysis.

Question 92: Which of the following correctly describes the action of the inferior oblique muscle in primary position?

Extorsion, depression, and adduction
Extorsion, elevation, and abduction (Correct answer)
Intorsion, elevation, and abduction
Intorsion, depression, and adduction

Correct answer: Extorsion, elevation, and abduction

In primary position, the inferior oblique produces extorsion as its primary action, with secondary actions of elevation and abduction.

Question 93: During prism and alternate cover testing, you neutralize a deviation with 35 PD base-out. This measures the:

Fusional vergence amplitude
Total deviation (manifest + latent) (Correct answer)
AC/A ratio
Manifest deviation only

Correct answer: Total deviation (manifest + latent)

Alternate cover testing dissociates fusion, revealing the total deviation including any latent component.

Question 94: A Certificate of Medical Necessity (CMN) for an orthotic device must typically be signed by:

The insurance company's medical director
The orthotist and billing department manager
The patient and the orthotist only
The referring physician or treating provider (Correct answer)

Correct answer: The referring physician or treating provider

Medicare and most payers require a physician or authorized treating provider to sign the CMN, attesting to the medical necessity of the device.

Question 95: What information must an orthotist know about a patient BEFORE initiating gait training with a new lower limb orthosis to prepare for potential emergencies?

The patient's insurance policy number
Medical history including cardiovascular conditions, fall history, and current medications (Correct answer)
The patient's preferred orthotic brand
The referring physician's specialty

Correct answer: Medical history including cardiovascular conditions, fall history, and current medications

Knowledge of cardiovascular conditions, fall history, and medications allows the orthotist to anticipate risks and prepare appropriate emergency responses during gait training.

Question 96: Which scenario best illustrates the concept of co-signature in orthotic clinical documentation?

An orthotic resident's note countersigned by the supervising certified orthotist (Correct answer)
A physician signing an insurance appeal letter
Two patients signing a shared consent form
A patient signing the delivery receipt

Correct answer: An orthotic resident's note countersigned by the supervising certified orthotist

Co-signature by a supervising certified orthotist validates the clinical competence of documentation produced by students or residents in training programs.

Question 97: During a cover-uncover test, the uncovered eye makes a refixation movement from an outward position. This indicates:

Exotropia (Correct answer)
Hypertropia
Exophoria
Esotropia

Correct answer: Exotropia

An outward-to-inward refixation movement on uncover indicates the eye was deviated outward (exotropia) under cover.

Question 98: A patient is prescribed a dynamic elbow orthosis following surgery for a radial nerve injury. During the first follow-up, the patient reports sharp paresthesias in the median nerve distribution. The orthotist should:

Assess for orthosis-related compression of the median nerve and modify or remove the device (Correct answer)
Increase the dynamic assist tension to improve function
Reassure the patient that postoperative paresthesias are expected
Refer the patient for a second surgical opinion before making adjustments

Correct answer: Assess for orthosis-related compression of the median nerve and modify or remove the device

New paresthesias in a different nerve distribution suggest the orthosis may be compressing the median nerve; immediate assessment and orthosis modification are required to prevent permanent nerve damage.

Question 99: Which refractive error is most commonly associated with accommodative esotropia?

Anisomyopia
Astigmatism with the rule
High myopia
Hyperopia (Correct answer)

Correct answer: Hyperopia

Accommodative esotropia is driven by excessive accommodative effort to overcome hyperopia, which triggers over-convergence through the high AC/A linkage.

Question 100: When is it appropriate for a Certified Orthotist to independently adjust a patient's prescription medication to manage orthotic-related pain?

When the pain is clearly orthotic-related and mild
Only for over-the-counter analgesics under 200mg ibuprofen
When the patient cannot reach their physician
Never; medication management is outside the orthotist's scope of practice (Correct answer)

Correct answer: Never; medication management is outside the orthotist's scope of practice

Adjusting prescription medications is strictly within the physician's scope of practice; orthotists must refer patients to the prescribing physician for any medication changes.

Certified Orthoptist (CO) Certification Exam

The Certified Orthoptist (CO) certification validates an individual's expertise in the diagnosis and non-surgical management of disorders of the eye movements and associated visual problems.

100

Questions

180 min

Time Limit

70%

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