Colour blindness is a problem that signifies problems in the colour sensing pigments that are present in one’s eyes. Most people who suffer from this condition cannot tell green and red or blue and yellow, apart. Complete colour blindness is known as achromatopsia. This is more common in men than in women.
HOW IS COLOR BLINDNESS DIAGNOSED?
Ophthalmologists use the Ishihara colour test to diagnose colour blindness. For children who have not yet learnt to read, symbols are used in the Ishihara test. Another test is the Farnsworth-Munsell 100 hue test.
HOW IS COLOR BLINDNESS TREATED?
There is generally no cure for colour blindness. However, the use of contact lenses might somewhat improve ability to differentiate between colours. Many applications on smart devices have been designed to help colour blind people.
DID YOU KNOW?
Men are much more likely to be color-blind than women because the genes responsible for the most common, inherited colour blindness are on the X chromosome. Males only have one X chromosome, while females have two X chromosomes. Colour blindness can be caused by physical or chemical damage to the eye, the optic nerve, or parts of the brain that process colour information. Colour vision can also decline with age, most often because of cataract - a clouding and yellowing of the eye’s lens.