What kind of tests primarily assess depth perception?

Depth perception is primarily assessed through binocular tests. This is because depth perception relies on the ability of the brain to combine the different images received from each eye, creating a three-dimensional view of the world. When each eye has a slightly different angle of view, the brain uses this information, known as binocular disparity, to judge depth and distance.

Binocular tests, such as the Randot Stereotest or the Titmus Fly Test, are specifically designed to evaluate how well eyes work together to perceive depth. These tests encourage the use of both eyes simultaneously, allowing the exam to assess the stereopsis, which is the perception of depth resulting from the visual processing of the two-dimensional images provided by each eye.

In contrast, visual acuity tests typically measure sharpness or clarity of vision, monocular tests assess the visual function of each eye independently, and color vision tests examine the ability to distinguish between different colors. None of these tests primarily focus on the aspect of depth perception in the same way binocular tests do.