Extramisssion Theory of Vision

The extramission theory of vision—the idea that the eyes emit rays or a form of light to perceive the world—was widely accepted in ancient thought and appears in various literary and philosophical traditions. Greek thinkers like Plato and Euclid supported versions of this theory, and it influenced medical and optical theories for centuries. In biblical texts, echoes of this concept can be found in passages that describe the eyes as sources of light or radiance.