Pairs of eyes are visible on the heads of these trilobites, Cambropallas telesto, from 520 million years ago. Trilobite compound eyes are the earliest well-preserved visual surfaces in the fossil ...

From eyes the size of a dinner plate to 360-degree vision, these animals boast extraordinarily efficient ways of seeing. Meet the creatures with the most crafty ...

Before eyes, life was gentler and tamer, dominated by sluggish soft-bodied creatures lolling around in the sea. The invention of the eye ushered in a more brutal and competitive world.