Science Questions

Do spiders have eyelids?

Sun, 27th Jun 2010

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Question

Miss Godfrey asked:

Do spiders have eyelids?

Answer

Chris -  They don't.  Spiders have a compound eyes, so they have lots, and lots of individual lenses that then filter down through this lens material, onto a photo receptor, a light-sensitive plate underneath so they don't have a call for having any kind of eyelid type structure.  Their eyes are open all the time, so they'll keep an eye on you because they've got plenty of them.

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