What Is Color Blindness, Causes, Symptoms, and Treatments. So what is color blindness? The term of color blindness is certainly familiar considering it happens to 1 % – 5% people especially males. Basically, it is a condition where people cannot see the colors in a normal way. Also called as the color deficiency, a person with color blindness is unable to distinguish certain colors usually the colors are red, blues and green.
Symptoms and Causes of Color Blindness
When a person suffers from color blindness, he/she shows symptoms. The symptoms of what is color blindness itself are different according to the degree of the severity, be it mild or severe. In fact, some people who have color deficiency are unaware of their condition. Usually, it the parent who first notice the symptoms as the child learn the colors. The most common symptoms include troubles in seeing the colors in the usual way and also the brightness of the colors, inability to differentiate shades of colors including in blue, yellow, green and red color. Actually, the mild color blindness doesn’t affect the vision’s sharpness. Only the severe color blindness affects the vision’s sharpness.
What is color blindness and its causes? When it comes to the causes of color blindness, the hereditary is the most common cause. It means color blindness is inherited from the parents. It is inherited through the genes. The genes itself are everything about the body including the eye’s vision, the hair type and other things about the body. In particular, this condition occurs when the retina’s light-sensitive cells fail to appropriately respond to the variations in light’s wavelengths. As a result, a person is unable to see and differentiate array of colors.
Besides the genes, there are also other causes of what is color blindness even if they are already grown up. These causes include aging, eye problems like macular degeneration, diabetic retinopathy, cataracts or glaucoma, injury to the eyes, and also medicine’s side effects.
A person’s retina consists of two different cells to detect the light, the cones, and the rods. The cone cells are used to detect colors. These cells are concentrated near vision’s center. Cones consist of three different types to see the color, blue, green and red. Then, the brain determines the color perception by using the input from those three different cone cells. Meanwhile, the rods cells function to detect only dark and light. These are very sensitive cells to low light levels. When a person has color blindness, it means there are absence or nonfunctioning of one or even more color cone cells. In another case, the color cone cells are unable to detect the different color. The severe color blindness refers to a condition where all the three cone cells are nonfunctioning or absent.
What is color blindness and the test? Usually, a person is diagnosed with color blindness after being tested by the doctors. This is a particular test where the person sees a number of pictures with different colored dots with numbers in it. Those who are unable to see the numbers in the pictures are diagnosed with color blindness. Apparently, the more likely to get color blindness are the boys. In fact, one of 12 boys has it.
Types of Degrees of Color Blindness
The color blindness’ degrees only consist of different types. Those with mild color deficiencies, for instance, are usually able to see the colors normally as long as they see it in good light, not in dim light. Meanwhile, other people with a different degree of color blindness are unable to distinguish certain colors at all. The most uncommon degree of color blindness which is the most severe one is usually a condition where the person sees everything in shades of gray.
Unfortunately, the inherited color blindness is unable to be corrected or treated. But in mild color blindness where a person is unable to differentiate green and red color, treatment is not required because it doesn’t really affect the way of lives. However, there are also some ways to help you make up for this problem including by wearing glasses that can block glare, wearing the colored contact lenses to help seeing the colors’ difference and also by learning to look for cues such as location or brightness to differentiate the colors. This can be useful to differentiate the traffic signal. Learning these details help you a lot in understanding what is color blindness.