Color vision deficiency is the inability to distinguish certain shades of colors under normal lighting conditions. The expression “color blindness” is more commonly used to describe this visual state, but not many men and women are totally color blind. This eye condition affects men far more frequently than females. Generally speaking, the prevalence is 1 in 12 men and 1 in 200 females of the populace suffers this eye problem.
Color vision deficiency is normally divided into three chief categories. These three major kinds are:
-
Red-green color vision defects (that is the most common)
-
Blue-yellow color vision defects
-
Total Absence of color vision (aka — color blindness)
Color blindness occurs whenever you are not able to find colors in the usual way. It is also known as color vision deficiency. Color blindness is a condition when someone cannot distinguish between certain colors. It typically occurs between greens and reds, and sometimes blues.
Detailed Understanding of Color Blindness
In the human retina, there are two different types of cells which detect light. They are known as rods and cones. Rods detect only brightness or darkness and are extremely sensitive to low light levels. Cone cells detect shade and are concentrated near the center of human eyesight. There are three types of cones that see color: red, blue and green. The mind utilizes input from such cone cells to ascertain our color perception.
Color blindness can happen when a lot of the color cone cells are absent, not functional, or find a different color than normal. Severe color blindness occurs when all three cone cells are absent. Mild color blindness occurs in the event when the cone cells exist but one cone cell does not work accurately.
There are different levels of color blindness. Some people with light color deficiencies could see colors generally in good lighting but have difficulty in dim lighting. Others can’t distinguish certain colors in any light condition. The most severe type of color blindness, where everything is seen in shades of gray, is uncommon. It generally affects both eyes evenly and remains stable during one’s lifetime.
Color blindness is generally something which you have from birth however, you may also develop it later in life. Change in color vision can signify a more severe illness. Anybody who experiences a significant change in color perception must see an ophthalmologist.
Treatment for Color Blindness
There’s absolutely no cure for color blindness. Nonetheless, folks with red-green color blindness might be able to use a distinctive pair of lenses to help them perceive colors more precisely. These lenses can only be used outdoors under bright lighting conditions. Visual aids also have been developed to help individuals cope with color blindness. There are iPhone and iPad programs, as an instance, that help people with color blindness discriminate in colors. A number of these apps enable users to snap a photo and tap it everywhere on the image to see the color of the area. More complex apps make it possible for users to find out both color and shades of color. These kinds of apps can be useful in picking ripe fruits like bananas, or finding complementary colors when picking out garments.