Diseases

Color Blindness

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Color blindness is an abnormal condition characterized by the inability to clearly distinguish different colors of the spectrum. The difficulties can be mild to severe. It is a misleading term because people with color blindness are not blind.

SYMPTOMS

Trouble seeing colors and the brightness of colors in the usual way;
Inability to tell the difference between shades of the same or similar colors, particularly red and green, or blue and yellow.

CAUSES

Color blindness is a genetic condition caused by a difference in how one or more of the light-sensitive cells found in the retina of the eye respond to certain colors. These cells, called cones, sense wavelengths of light, and enable the retina to distinguish between colors.