Researchers found that vertebrate eyes - including humans’ - began as brain tissue from a single ancestral light-sensing organ.

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A widely popular idea in psychology and evolutionary science suggests that the distinctive look of the human eye—particularly the white area surrounding the iris—evolved to help us communicate ...

Scientists say humans share ancestry with a tiny one eyed creature from 600 million years ago, and remnants of its “cyclops” eye may still exist deep inside our brains.