What causes it? How is it transmitted?

1. Genetics

Color blindness can be inherited genetically. it is most commonly inherited from mutations of the X chromosome but the mapping of the human genome has shown there are many causative mutation - mutation capable of causing color blindness originate from at least 19 different chromosomes and 56 different genes.

2. Disease

  • cone dystophy
  • cone-rod dystophy
  • achromatopsia (aka rod monochromatism, aka stationary cone dystrophy, aka cone dysfunction syndrome)
  • blue cone monochromatism
  • leber's congenital amaurosis
  • retinitis pigmentosa (initially affects rods but can later progress to cones and therefore color blindness)

3. Others

Other causes of color blindness include brain or retinal damage caused by shaken baby syndrome , accidents and other trauma which produce swelling of the brain in the occipital lobe, and damage to the retina caused by exposure to ultraviolet light. Most ultraviolet light damage is caused during childhood and this form of retinal degeneration is the leading cause of blindness in the world. Damage often presents itself later on in life.
Color blindness may also present itself in the spectrum of degenerative diseases of the eye, such as age-related macular degeneration, and as part of the retinal damage caused by diabetes.

What are the symptoms? How long do it last? Is it deadly?

1. What are the symptoms?

Seeing things in shades of grey rather then color is usually what color blind people experience, also people who are partially color blind may see purple and blue as the same color or red and maroon as the same, etc...
Color blind is an X linked disorder in which the affected member is unable to distinguish colors. the cone cells in the retina are defective and so they are unable to differentiate colors. green red blindness, green blue blindness and red blue blindness are observed where they are unable to differentiate the colors.

2. How long do it last?
In most case color blind is permanent

3. is it deadly
Color blindness is far from deadly; it is a minor inconvenience. People very seldom find themselves in a situation in which their lives depend upon correctly identifying a color. Of course, we do have to know what color a traffic signal is, however, we know that the red lights are on top, yellow in the middle and green at the bottom, so we can tell the position along even if we can't identify the actual color.

Can it be cured? If so, how? If not, is there any way that we can at least treat it?

1. Can it be cured?

There is no treatment or cure for color blind. most color vision deficient person compensate well for their abnormality and usually rely on color cues and details that are not consciously evident to persons with typical color vision

Inherited color blindness cannot be prevented. In the case of some types of acquired color deficiency, if the cause of the problem is removed, the condition may improve with time. but for most people with acquired color blind, the damage is usually permanent.

2. is there any way to treat it
There is generally no treatment to cure color deficiencies. However, certain types of tinted filters and contact lenses may help an individual to better distinguish different colors.