eli5: How does depth perception work?

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I don’t naturally have it so visual explains don’t make sense to me

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Anonymous 0 Comments

When my allergies get so bad that I can’t see clearly out of one eye (thank God it’s only been both once), what I’ll do is shut that eye and occasionally move my head a few inches left and right. The more an object moves, the closer it is to me.

Because of many years of practice I’m mostly functional like that, but I still don’t trust myself with really fine motor skills until I can see normally

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