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Ptolemy, in his treatise Optics, held an extramission-intromission theory of eyesight: the rays (or flux) in the eye fashioned a cone, the vertex becoming within the attention, and The bottom defining the Visible area. The rays had been sensitive, and conveyed data back on the observer's intellect about the space https://elliotjngyq.blogdun.com/30453977/glasses-near-me-for-dummies

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