The Types of Colour Blindness

There are several types of inherited colour blindness. A big misconception in many people think anyone labeled as "colorblind" only sees the world in black and white - like watching on television a black and white movie. This is a misconception and not true at all. There are many different types of color blindness or be more correctly called colour vision deficiencies. Extremely rare to be totally color blind (monochromacy - complete cannot distiguish of any color sensation).

Monochromacy (achromatopsia)

Patients with symptoms of monochromatic vision cant see no colour at all and their world consists of different shades from black to white, like only seeing movie at black and white television. Achromatopsia is extremely rare happens, occurring only in approximately 1 person in 33,000 and the symptoms from it can make your life very difficult. Someone with achromatopsia will need a rehabilitation to wear dark glasses inside in normal light conditions.

Monochromacy (achromatopsia)

Dichromacy

People with dichromatic colour vision have only able to see two types of colour. they have a total absence of function of one colour type. Lack of ability to see many different colour is the easiest way to explain and find this condition but in actual fact happened on people is it a specific section from the light spectrum which cannot be perceived sensation.

Dichromacy

Anomalous Trichromacy

People with anomalous trichromats or also known as ‘faulty’ trichromatic vision will be colour blind to some extent. The only way to explain this problem is, if we example one people have '4 ability' to see colour, people with trichromatic condition all of their three "ability" types are used to perceive light colours but one type of "ability" will perceives light slightly out of alignment, so that there are many different types of effect produced depending which "ability" type is ‘faulty’