One function of saccades is to prevent adaptation of photoreceptors to a visual image.

Question

Quizplus · Accepted Answer

Saccades, which are rapid eye movements, prevent adaptation of photoreceptors by continually shifting the position of the eyes and adjusting the angle at which light enters the eye. This allows different photoreceptors to be stimulated and prevents any one photoreceptor from being overstimulated for too long, which could lead to adaptation and reduced sensitivity to the image.

One Function of Saccades Is to Prevent Adaptation of Photoreceptors