Did you know?

Education, Normal

The National, Monday March 3rd, 2014

 DID you know that people who are colour blind can’t discriminate between red and green 

The inability to see red and green is the most common type of colour blindness, although some people can’t see blues and greens. 

In rare cases, some people may not be able to see any colour at all.

Our ability to see colour depends upon the functioning of photoreceptors in our eyes called cones. 

These photoreceptors are located in the central part of the retina and contain red, green or blue pigments that are activated by light. 

Colour blindness is caused by an absence of one or more of these pigments.

Colour blindness can be genetically inherited or caused by damage to the optic nerve or retina.