The human eye is an amazing mechanism, able to detect anywhere from a few photons to a few quadrillion, or switch focus from the screen in front of you to the distant horizon in a third of a second. How did these complex structures evolve? The following video details the 500 million year story of the human eye. [4.44]

Concepts

vision

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Additional Tags

eye structure and function, human eye, ted ed, ted talk, the evolution of the human eye

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Classroom Considerations

• Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)