afterimage, visual illusion in which retinal impressions persist after the removal of a stimulus, believed to be caused by the continued activation of the visual system.

Is it normal to have afterimage?

Physiological afterimage is a normal response that occurs when an image briefly persists after looking away, such as following a camera flash.

What is an afterimage?

A flash of light prints a lingering image in your eye. After looking at something bright, such as a lamp or a camera flash, you may continue to see an image of that object when you look away. This lingering visual impression is called an afterimage.