Question

Stereoscopic binocular vision is characteristic of

• A. All mammals
• B. Birds only
• C. Primates
• D. Both A and B

Answer 1

The correct option is C Primates

Stereopsis is a term that is most often used to refer to the perception of depth and 3-dimensional structure obtained on the basis of the visual information deriving from two eyes by binocular vision. Because of the eyes of humans, and many animals, are located at different lateral positions on the head, binocular vision results in two slightly different images projected to the retinas of the eyes. The differences are mainly in the relative horizontal position of objects in the two images. These positional differences are referred to as binocular disparities. This is a feature of the primates.