Are there different types of blindness?

Being blind generally refers to a complete lack of functional vision. read more

Different types of blindness cause different types of vision impairment. Being blind generally refers to a complete lack of functional vision. However, blindness involves varying levels of vision ability, sometimes under varying conditions. read more

There are three main kinds of color blindness, based on photopigment defects in the three different kinds of cones that respond to blue, green, and red light. Red-green color blindness is the most common, followed by blue-yellow color blindness. read more

Yes, there are several different levels or stages of blindness. There are also several different medical conditions that affect the eyes differently (think cataracts vs. nearsightedness vs. farsightedness vs. macular degeneration). When a person has no light perception, that person is considered totally blind. read more