After - Image

: This theory explains why negative afterimages appear in complementary colors. It suggests that the visual system processes color in antagonistic pairs: red vs. cyan, green vs. magenta, and blue vs. yellow.

: These retain the same colors as the original image. They typically occur after a very brief, intense exposure to light, such as a camera flash. Biological Mechanisms After image

While afterimages are usually normal physiological occurrences, abnormally long-lasting or intense afterimages are known as . According to the Cleveland Clinic , persistent afterimages can sometimes be associated with medical conditions such as: : This theory explains why negative afterimages appear