There are many misconceptions regarding color blindness. The conception that color blindness is total blindness is hype. In this term paper on color blindness, I want to reveal the truth behind all such misconceptions. Actually color blindness is imprecise perceptual feeling to some specific colors. It is also observed that people with color blindness see everything in one color. Most often people with color blindness just see misrepresented colors. These people have problem in seeing some colors. Many types of color blindness exist.

The most common form of color blindness is red- green deficiency. Color blindness was first discovered by John Dalton. There are many types of color blindness. The most common type of color blindness is red green deficiency. The people having this type of eye defect cannot distinguish between red and green color.

This term paper on color blindness will reveal the real causes of color blindness. Color blindness exists due to defect in retina. The human retina converts light energy that is falling on its surface into electrical energy. These electrical impulses are then sent to brain. The decoding of electrical impulses into information is done by photoreceptor cells. Rods and cones are two types of photoreceptor cells. Cones enable an individual to differentiate between various different kinds of colors. These cones are of red, blue and green colors. Cones recognize different colors by detecting different wavelengths of light. Color blind people have lesser number of cones due to which they mix up various different colors and are unable to differentiate them.

Sometimes Color blind people have to face problems due to such defect. For example they face problems in understanding traffic signals. It is really difficult for color blind people to operate machinery having green light as safety and red light as dangerous. Even children having color blindness face problems at school while studying and following instructions. Most often such children couldn’t understand the things written on board with green, red or any colored chalk. It is necessary for teachers to be aware of student’s problems and to help them. Teachers in order to help color blind student should always use white chalk for writing on board.

Measures should be taken to help people having color blindness.