Color blindness is a genetic condition caused by a difference in how one or more of the light-sensitive cells found in the retina of the eye respond to certain colors. These cells, called cones, sense wavelengths of light, and enable the retina to distinguish between colors.

It is well established that colour-blindness and haemophilia are due to sex-linked genes. These genes appear to manifest themselves in all males who carry them. In women the gene for haemophilia is probably always recessive, the cases of alleged haemophilia in heterozygous women being very doubtful.

Genetic changes involving the OPN1LW or OPN1MW gene cause red-green color vision defects. These changes lead to an absence of L or M cones or to the production of abnormal opsin pigments in these cones that affect red-green color vision.

Red-green color blindness is the most common type of color deficiency. Also known as deuteranopia, this is most likely a congenital condition, meaning that you’re born with it. If you have this type of color blindness, you may have difficulty seeing different shades of red, green, and yellow.

Usually, color blindness runs in families. There’s no cure, but special glasses and contact lenses can help. Most people who are color blind are able to adjust and don’t have problems with everyday activities.

Unfortunately the Guidance Notes to the Equality Act 2010 are misleading but the Government Equalities Office recognises colour blindness can be a disability, despite this ambiguity. In other cultures colour blindness may be regarded as a defect.

It’s a common problem that affects around 1 in 12 men and 1 in 200 women. Someone with this type of colour vision deficiency may: find it hard to tell the difference between reds, oranges, yellows, browns and greens.

When you are color blind, you are not able to see colors and the brightness of colors. You also may not be able to see shades of the same or similar colors. For example, someone who has red-green colorblindness has problems distinguishing between some shades of red, yellow, and green.

Color blindness, also known as color vision deficiency, is characterized by an inability to differentiate between different shades of colors, such as red, green, or blue. The primary cause of color blindness is a lack of light-sensitive pigments in the cones of the eye.

If the mother carries the gene but is not color blind, there is a 50% chance that her sons will be color blind and a 50% chance that her daughters will carry the gene. When a color blind father and a mother who carries the color blind gene have children, there is a 50% chance that their sons will be color blind.