Patient Evaluation Flashcards
7 cards from real JCAHPO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Patient Evaluation flashcards as text
When recording best-corrected visual acuity as 20/40, this means the patient can see at 20 feet what a person with normal vision can see at:
Answer: 40 feet
The denominator represents the distance at which a normally sighted person can resolve the same letter that the patient resolves at 20 feet.
Pachymetry is performed in the preoperative evaluation for LASIK primarily to measure:
Answer: Central corneal thickness
Central corneal thickness measured by pachymetry is critical to ensure adequate residual stromal bed after refractive ablation, minimizing ectasia risk.
A patient with diabetes presents for a dilated fundus exam. Which pupillary dilation agent is most appropriate to use when a short duration of dilation is preferred?
Answer: Tropicamide 1%
Tropicamide 1% provides rapid, short-acting dilation (4–6 hours) and is the preferred agent when prolonged cycloplegia is undesirable.
When performing the swinging flashlight test, a relative afferent pupillary defect (RAPD) is present when the illuminated pupil:
Answer: Dilates or shows less constriction when the light swings to that eye
An RAPD (Marcus Gunn pupil) is identified when the pupil paradoxically dilates as the light swings from the normal eye to the affected eye, indicating reduced afferent input.
Which instrument is used at the slit lamp to measure the anterior chamber angle and requires a contact lens?
Answer: Gonioscope
Gonioscopy uses a mirrored contact lens to redirect the view, allowing visualization of the trabecular meshwork and anterior chamber angle structures.
A patient reports that objects appear smaller than they actually are. This symptom is described as:
Answer: Micropsia
Micropsia is the perception that objects are smaller than their true size and can occur with macular disease, refractive errors, or neurological conditions.
Color vision testing with Ishihara pseudoisochromatic plates primarily detects deficiencies in:
Answer: Red-green color discrimination
Ishihara plates are designed to detect congenital red-green color deficiencies (protanopia and deuteranopia) and are not sensitive to blue-yellow defects.