AOC AOC Visual Optics and Refraction Concepts

Question 1

Which type of lens is used to correct myopia (nearsightedness)?

Accepted Answer

Minus (concave) lens

Answer

Plus (convex) lens

Answer

Prism lens

Answer

Plano lens

Question 2

The measurement of the refractive error in which the two principal meridians have different powers is called:

Accepted Answer

Astigmatism

Answer

Myopia

Answer

Hyperopia

Answer

Presbyopia

Question 3

Which instrument measures the curvature of the anterior corneal surface to aid in contact lens fitting and astigmatism assessment?

Accepted Answer

Keratometer

Answer

Tonometer

Answer

Pachymeter

Answer

Lensometer

Question 4

A patient with +2.50 sphere in each eye most likely has which refractive condition?

Accepted Answer

Hyperopia

Answer

Myopia

Answer

Emmetropia

Answer

Anisometropia

Question 5

The near point of accommodation is defined as:

Accepted Answer

The closest point at which the eye can maintain clear focus

Answer

The farthest point seen clearly without accommodation

Answer

The point of maximum divergence

Answer

The point of equal retinal image size

Question 6

Anisometropia refers to:

Accepted Answer

Unequal refractive error between the two eyes

Answer

Equal refractive error in both eyes

Answer

High myopia in both eyes

Answer

Loss of accommodation with aging