![]() ![]() It is most often inherited, but may also occur due to disease or injury.ĥ. ![]() This condition is known as heterochromia, and is usually the result of a relative lack or excess of pigment in one eye. Some people are born with mismatched eye colours. Eye colour is determined by genetics, because they dictate how much melanin is produced in your iris.Ĥ. With over 55% of the world’s population having brown eyes, it remains the most common colour. The most common eye colour in the world is brown. Scientists estimate that eye first evolved 500 million years ago, originally in a very simple form that could probably only distinguish light from dark.ģ. Eyes first evolved around 500 million years ago. ![]() In the same way that a camera lens focuses light onto a photosensitive surface, your eyes focus light onto the retina.Ģ. We’ve put together 51 facts about your eyes that will help you realise just how remarkable they truly are:ġ. They work hard from the minute you wake up to the minute you go back to sleep, constantly taking in information about the world around you. Photo by Angelos Michalopoulos on Unsplash ![]()
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