ELI5, why can’t we sleep with our eyes opened?

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Why can’t we sleep with our eyes opened?
I’m wondering… I mean, I know our eyes would dry out but there’s gotta be a bigger explanation?
I mean, why does our body feels the need to close it eyes? And can only rest with its eyes closed?

Could I trick my brain to sleep while my eyes are opened?

In: Biology

5 Answers

Anonymous 0 Comments

There’s no benefit to it. As you mentioned, your eyes would dry out. Additionally there’s no real benefit to keeping the portions of your brain that automatically blink and processes visual data fully active while you’re asleep – one of the primary functions of sleep is to rejuvenate the brain and because of that, nonessential functions essentially need to be shut down.

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