Peripheral stereopsis is generated outside the central 5 degrees of the fovea and is also known as what?

Peripheral stereopsis is generated outside the central 5 degrees of the fovea and is also known as what?

• A. Fine stereopsis
• B. Central suppression
• C. Peripheral stereopsis
• D. Gross stereopsis

Answer: (C)

Peripheral stereopsis is depth information produced by the peripheral retina, outside the central fovea. The periphery has larger receptive fields and lower spatial resolution, so it can detect only large disparities, giving a rough sense of depth. This coarse depth perception is called gross (or coarse) stereopsis, in contrast to fine stereopsis produced by the fovea for precise depth from small disparities.

Peripheral stereopsis is depth information produced by the peripheral retina, outside the central fovea. The periphery has larger receptive fields and lower spatial resolution, so it can detect only large disparities, giving a rough sense of depth. This coarse depth perception is called gross (or coarse) stereopsis, in contrast to fine stereopsis produced by the fovea for precise depth from small disparities.