American Board of Opticianry (ABO) Practice Test 2026 - Free ABO Practice Questions and Study Guide

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What do iseikonic lenses aim to correct?

Blurry vision

Astigmatism

Color vision deficiencies

Unequal retinal image sizes

Iseikonic lenses aim to correct unequal retinal image sizes, also known as aniseikonia. This occurs when the images projected onto the two retinas are not equal in size, leading to distorted or inconsistent vision. Options A, B, and C may be addressed by other types of corrective lenses, but they do not specifically target aniseikonia. Therefore, they are not the correct answer in this case.

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