What happens when I look at the coloured squares There are three main types and each responds mainly to one colour, either red, blue or green. ![]() These are the cells that send the signal to the brain. ![]() The cells that see colour are called the ‘cones’. This is a type of ‘after vision’.Īt the back of the eye in the retina, there are cells that recognise light and colour. This means that there were still signals being sent even when the eyes were shut. The ability to ‘see’ anything comes from the brain when it interprets signals sent to it from the eyes. Why can you see a coloured square when your eyes are closed? ![]() ![]() 23rd September 2018 5:36 pm Did you see a coloured square when you closed your eyes?ĭid you ‘see’ a coloured square when you closed your eyes?
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