Eyes were quite the sudden, unanticipated gift in the history of life. Charles Darwin expected that they must have developed from simple forerunners.
Such accounts invoke the abrupt appearance of key features of advanced eyes including the lens, cornea, and iris.
We take them for granted, but our ability to interact with the world through vision is beyond remarkable.
Let’s consider the eye, which is but one of many subsystems (along with the brain, heart, liver, lungs, etc.) in higher animals that coordinate their tasks to keep an organism alive.
In a powerful new short video, we consider the scientific evidence around the question of eye evolution.