stereopsis: meaning, definition, pronunciation and examples

Not exactly. Depth perception is a broader term that can be achieved monocularly (using one eye with cues like shadows and perspective). Stereopsis is a specific, high-grade type of depth perception that requires both eyes (binocular vision) to work together.

Yes. Individuals with vision in only one eye, or whose eyes do not work together, lose stereopsis but can still use monocular cues (like relative size, motion parallax, and occlusion) to perceive depth, though it is less precise for near tasks.

It is crucial for fine motor tasks requiring precise hand-eye coordination (e.g., threading a needle, catching a ball, surgery) and for accurately navigating the world, especially at close distances. It enhances the quality and realism of visual perception.

Commonly via stereotests like the Titmus Fly test, Randot test, or TNO test. These present slightly different images to each eye (often with polarized or red-green glasses). If stereopsis is present, the brain fuses these into a single 3D image the patient can identify.

The perception of depth and three-dimensional structure obtained on the basis of visual information deriving from two eyes (binocular vision), allowing solid objects to be perceived in three dimensions.

Stereopsis is usually technical / scientific / academic in register.

Stereopsis: in British English it is pronounced /ˌstɛrɪˈɒpsɪs/, and in American English it is pronounced /ˌstɛriˈɑpsɪs/. Tap the audio buttons above to hear it.