The “extramission” theory of vision - Deepstash

The “extramission” theory of vision

Extramission means “sending out,” and the extramission theory is the belief that vision is a force emitted from the eye. It is an intuitive understanding of vision common among children that persists among many adults.

In contrast, the modern visual theory is called “intromission,” and is based on the notion that vision results from light entering the eyes.

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