this post was submitted on 25 Sep 2024
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Science Memes

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submitted 1 month ago by [email protected] to c/[email protected]
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[โ€“] [email protected] 51 points 1 month ago (2 children)

From the first source on the linked study, they describe it as the following:

(...) This functions as a mirror providing the second opportunity for photon capture by reflecting light back through the retina, enhancing visual sensitivity.

[โ€“] [email protected] 0 points 1 month ago

But the iris is a mask, it blocks off axis light