FREE ABO Cataract and Lens Questions and Answers

Question 1

A 55-year-old patient on long-term systemic prednisone for rheumatoid arthritis presents with a gradual, painless decrease in vision, particularly complaining of glare at night.
Which type of cataract is most commonly associated with this clinical history?

Accepted Answer

Posterior subcapsular

Answer

Nuclear sclerotic

Answer

Cortical

Answer

Traumatic rosette

Question 2

What is the primary mechanism by which phacoemulsification removes the crystalline lens?

Accepted Answer

High-frequency ultrasonic vibration

Answer

Laser photodisruption

Answer

Mechanical cutting with a blade

Answer

Chemical dissolution

Question 3

When calculating intraocular lens (IOL) power for a patient with a very short axial length (<22.0 mm), which of the following formulas is generally considered more accurate?

Accepted Answer

Hoffer Q

Answer

SRK/T

Answer

Holladay 1

Answer

SRK II

Question 4

A 2-day-old infant is noted to have bilateral leukocoria. What is the most common cause of bilateral, non-traumatic congenital cataracts?

Accepted Answer

Idiopathic

Answer

Galactosemia

Answer

Rubella infection

Answer

Lowe syndrome

Question 5

A patient develops acute, painful vision loss, hypopyon, and severe intraocular inflammation three days after uncomplicated cataract surgery. What is the most common causative organism for acute postoperative endophthalmitis?

Accepted Answer

Staphylococcus epidermidis

Answer

Pseudomonas aeruginosa

Answer

Candida albicans

Answer

Streptococcus pneumoniae

Question 6

Which of the following statements best describes the anatomical and physiological state of the lens nucleus in an elderly patient?

Accepted Answer

It has the highest concentration of insoluble proteins and is dehydrated.

Answer

It has the highest water content and lowest protein concentration.

Answer

It is composed of the youngest lens fibers.

Answer

It is the primary site of metabolic activity in the lens.

Question 7

A patient presents 12 hours after cataract surgery with diffuse limbus-to-limbus corneal edema, mild anterior chamber reaction, and no vitritis. The symptoms are improving with topical steroids. This presentation is most consistent with:

Accepted Answer

Toxic Anterior Segment Syndrome (TASS)

Answer

Acute postoperative endophthalmitis

Answer

Retained lens fragment

Answer

Uveitis-Glaucoma-Hyphema (UGH) Syndrome

A 55-year-old patient on long-term systemic prednisone for rheumatoid arthritis presents with a gradual, painless decrease in vision, particularly complaining of glare at night.Which type of cataract is most commonly associated with this clinical history?

A 55-year-old patient on long-term systemic prednisone for rheumatoid arthritis presents with a gradual, painless decrease in vision, particularly complaining of glare at night.
Which type of cataract is most commonly associated with this clinical history?