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by uj8efdkjfdshf 1747 days ago
It's the accommodation reflex [0] at work here - pupillary constriction goes hand in hand with a shortening of the focal length of the lens, and the eyes also converge together. This is a brainstem level response, so I doubt there'd be any easy way to dissociate these movements consciously.

[0] https://en.wikipedia.org/wiki/Accommodation_reflex

1 comments

Interesting, this makes sense. Thanks for figuring it out