Color Blindness, or Color Vision Deficiency, is an eye condition where a person is not able to distinguish certain colors or shades of colors to some degree. Color Blindness does not mean that a person can only see black and white. A person with color blindness is able to see different colors, however they are not able to see some colors due to deficiencies in the eyes.
Color Blindness is a hereditary condition but can also be caused by eye diseases, damage to the retina and macula, and aging or when the lens is darkened over time from a cataract. Although there is no absolute treatment for hereditary color blindness, there are methods, techniques, and special glasses that may help people with color blindness differentiate different colors but not truly see them. If you have extreme trouble distinguishing the numbers in one of the pictures below or are not able to see them at all, then you may have some degree of color blindness.
COLOR BLINDNESS SYMPTOMS AND SIGNS
Do you have a hard time distinguishing if colors are red and green, or blue and yellow? This is the primary sign of this vision problem. Contrary to popular belief, it is rare that a color-blind person would see only in neutral colors or shades of gray.
The symptoms of color blindness are dependent on several factors, such as whether the problem is congenital, acquired, partial, or complete.
- Difficulty distinguishing reds and greens (most common)
- Difficulty distinguishing blues and greens (less common)
- The symptoms of more serious inherited color vision problems and some types acquired problems may include:
- Objects appear as various shades of gray (this occurs with complete color blindness and is very rare)
- Reduced vision
COLOR BLINDNESS CAUSES
Color Blindness occurs when certain cells in the retina that normally respond to color do not respond as they should.
Usually, people with a color deficiency are born with it, and the problem affects more men than it does women. Color blindness is caused by a common X-linked recessive gene. This means that, if you’re color-blind, your mother must either be color-blind, or have normal vision but carry the color-deficient gene. Color-blind fathers pass the gene to their daughters only, who will have normal color vision unless their mother also carries the color-deficient gene.
Aging or disease can also damage retinal cells, and in extreme cases can lead to almost total color blindness.