If you tell your friends you are “Colour Blind” or “iRochromatic” they may joke around and ask you what colour is this and what colour is that. But to people with colour vision deficit, it can be an ongoing problem. Even Wikipedia seems to make light of colour blindness, stating that it is a minor […]
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Although here at Colour Vision Optical we don’t like the term ‘Colour Blind” and prefer iRochromatic or even Colour Vision deficient, we can’t ignore the fact that worldwide Colour Blind Awareness day happens September 6 each year. So why September 6? Firstly this is John Dalton’s birthday. Who is John Dalton? John Dalton, a chemist, […]
In the retina at the back of the eye – the part of the eye that picks up light coming in – there are 2 types of cell, ‘rod cells’ and ‘cone cells’. Rod Cells The human eye contains about 130 million rods and the role of rod cells is to work and help us see in […]
Did you know an iRochromatic (colour blind) person sees only about 10,000 to 100,000 different hues? Those that are non-colour blind see about 1 million to 7 million different colour hues. However the human eye really only sees three colours. The retina has three types of cones: one is sensitive to the colour red, one […]
