Submitted by RepeatOsiris t3_yho3a4 in explainlikeimfive
macanizales t1_iuethf1 wrote
You can attribute it to a few things. Astigmatism correction due to your eyes being compressed into a rounder shape at your lens, like squeezing a slightly oval balloon from the tied and opposite ends, the deepening of your lens due to the slight compression creates a stronger magnification, and your lashes reduce ambient light that could be creating a haze over the object you're focusing on.
RepeatOsiris OP t1_iueu9hp wrote
I didn't realise the muscles around the eyes would be strong enough to squidge the eyes slightly into a different shape. Kind of icky but interesting to know! That all makes a lot of sense, thanks!
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