Which vision test assesses depth perception?

The stereo vision test is specifically designed to assess depth perception, which is crucial for understanding spatial relationships and accurately judging distances between objects. This test typically involves using images or devices that present slightly different views to each eye, allowing the brain to fuse these images and perceive depth. The ability to do this involves the proper functioning of both the visual system and the brain's processing of visual information.

In contrast, the Snellen chart is primarily used for measuring visual acuity, which assesses how well a person can see details at a distance. The Amsler grid test is utilized to detect defects in central vision or to screen for macular degeneration, focusing on clarity and distortion of vision rather than depth. Lastly, the color vision test is aimed at identifying color blindness and understanding color perception, which is unrelated to depth perception. Each of these tests serves a different purpose, but only the stereo vision test assesses the ability to perceive depth accurately.