Certified Ophthalmic Technician (COT) Practice Test 2026 - Free COT Practice Questions and Study Guide

The Wirt test is specifically designed to evaluate stereopsis, which is the ability to perceive depth and distance based on the slightly different views of the world that each eye provides. By presenting images that require binocular vision to interpret accurately, the Wirt test assesses how well both eyes work together to create a three-dimensional perception.

The Amsler grid is used primarily for detecting visual distortions and central vision issues, particularly in patients with conditions like macular degeneration. It does not assess depth perception.

A visual field test measures the broad extent of vision in all directions and is used to check for any gaps in peripheral vision versus three-dimensional spatial understanding.

Color vision tests evaluate an individual's ability to see and distinguish different colors, which does not relate to depth perception.

Thus, the Wirt test stands out as the appropriate choice for assessing stereopsis, focusing on the functional ability to perceive depth through binocular vision.