Eli5: why are our eyes not shaped more round like our actual eyeballs?

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I feel like most other species’ eyes are shaped round like their eyes, but ours are more almond. It’s strange

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Anonymous 0 Comments

As has been mentioned, plenty of other animals with eyelids like ours have eyes that look almond-shaped to some degree.

But maybe you’re not just thinking of the shape of the visible part of the human eye, but also the prominent white sclera? Most animals don’t have much of the sclera exposed, if any, and further the sclera is often a dark color like the iris and pupil in many eyed animals. The common thought is that having the sclera hidden and/or a similar color to surrounding tissue helps with staying hidden, so other animals don’t notice the big patch of contrasting color. In contrast, the conventional wisdom is that humans have big patches of exposed sclera so it’s easier to tell where someone else is looking, promoting silent communication and so on.

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