Trilobites evolved a wide variety of eye forms. Trilobites lived between 521 and 252 million years ago. They were one of the first groups of creatures to develop complex, compound eyes, where many ...

Compound eyes are made up of many repeating units ... which sees colour using 12 to 16 visual pigments (humans have three) and can even process polarised light. Every one of these eyes begins its ...

Humans have unique eye shapes that differ from one person to another. These shapes reveal a wide range of emotions and ...

Possibly when humans migrated from Africa to Europe. This would explain why only people of European descent have blue eyes. It would also suggest that all blue-eyed people share a single European ...

The insects have evolved a compound eye, which consists of many individual eyes with individual lenses ... which was already known from humans, and was known from the mouse.