Visual acuity = $$\frac{\text{distance from chart}}{\text{last line read correctly}}$$

Question 1

Which cranial nerve is primarily responsible for vision, and how is it assessed during an eye examination?

Accepted Answer

Cranial nerve II (Optic); assessed by testing visual acuity with the Snellen chart.

Question 2

A patient reads the 20/30 line on the Snellen chart at 20 feet with two errors. What does this result indicate about their vision?

Accepted Answer

Their vision is worse than normal; they see at 20 feet what a person with normal vision sees at 30 feet.

Question 3

Which test is used to assess peripheral vision and compare it to the examiner’s visual field?

Accepted Answer

Confrontation test

Question 4

During the cover-uncover test, a patient’s eye moves to fixate when the cover is removed. What does this finding suggest?

Accepted Answer

Presence of strabismus (deviated alignment)

Question 5

Which formula represents the visual acuity recorded using the Snellen chart?

Accepted Answer

Visual acuity = $$\frac{	ext{distance from chart}}{	ext{last line read correctly}}$$

Question 6

Which of the following is a normal response when testing for accommodation?

Accepted Answer

Pupil constriction and convergence of the eyes

Question 7

Aging can affect vision in several ways. Which of the following is NOT a typical age-related change?

Accepted Answer

Increased lacrimation

Question 8

Which structure is inspected last during an ocular fundus examination and is responsible for the sharpest vision?

Accepted Answer

Macula (including the fovea)

Question 9

Which of the following conditions is characterized by a yellowish deposit on the eyelids and is commonly seen in older adults?

Accepted Answer

Xanthelasma

Question 10

What is the primary function of the corneal light reflex (Hirschberg’s test)?

Accepted Answer

To evaluate parallel alignment of the eyes

Question 11

Which cranial nerves are involved in extraocular muscle movement? Select all that apply.

Accepted Answer

III, IV, VI

Question 12

A patient presents with unequal pupil sizes (anisocoria). Which of the following is the most appropriate next step?

Accepted Answer

Document as a normal finding if both pupils react to light and accommodation.

Question 13

Which test is most appropriate for assessing near vision in adults?

Accepted Answer

Jaegar card held 14 inches from the eyes

Question 14

Which of the following is a sign of systemic vascular disease observed during ocular fundus examination?

Accepted Answer

Retinal vessels

Question 15

During an eye exam, the examiner uses the ophthalmoscope’s red lens selector dial. What is the purpose of this setting?

Accepted Answer

To examine nearsighted eyes (myopia)

Question 16

Which developmental milestone is most relevant for assessing visual acuity in infants?

Accepted Answer

Response to objects and the Allen test

Question 17

Which equation best describes the relationship between the physiological cup and the optic disc diameter?

Accepted Answer

Cup-to-disc ratio = $$\frac{	ext{cup diameter}}{	ext{disc diameter}}$$

Question 18

Which of the following is a normal finding in infants under 2 months during extraocular muscle function testing?

Accepted Answer

Slight nystagmus

Question 19

Which of the following is NOT a function of the lacrimal apparatus?

Accepted Answer

Regulation of pupil size

Question 20

A patient complains of difficulty seeing at night and loss of peripheral vision. Which condition is most likely?

Accepted Answer

Glaucoma

Assessment and Health of the Eye: Clinical Concepts and Examination

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