American Board of Opticianry (ABO) Practice Test 2026 – The All-in-One Guide to Master the American Board of Opticianry Exam!

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards

From $12.50Unlock all

Session length

1 / 20

What does anisometropia refer to?

Differing refractive errors for the two eyes

Anisometropia refers to a condition in which the two eyes have differing refractive errors, meaning that they require different levels of refractive correction in order to see clearly. This can lead to difficulties with depth perception, blurry vision, and eye strain. It is not related to the distance of light or the muscles that move the eyes, making options B and C incorrect. Option D is also incorrect as anisometropia is not a unit of measurement, but a condition affecting the eyes.

Get further explanation with Examzify DeepDiveBeta

Light rays from a point source twenty feet or more away

The muscle that moves the eye inward

The unit used to measure the displacement of a ray of light