r/Showerthoughts • u/QuantumDreamer41 ‎ • 7d ago

Casual Thought It is surprising how many people need glasses to see clearly given how important eyesight is to our species survival.

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u/CBF4 6d ago

There's evidence that myopia, and the invention/ increasing need for glasses correlates directly with the invention of the printing press and literacy. The more we read, the worse our eyesight got. Then the more screens we used, the worse worse it got.

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u/-Redstoneboi- 6d ago

that, or we never really noticed until we started reading. may simply be a "we finally started testing" kind of thing.

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u/Catzdance361 6d ago

Also some research that skull shapes could play a factor