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I don't think blindness (or otherwise) has much to do with it, since most people sleep in the dark anyway.
However, many people can and do sleep with their eyes at least partially open. The condition is known as "lagophthalmos" or "nocturnal lagophthalmos" and have read that: from reported occurences, it may affect anything between about 4% and 20% of the population, from time to time.
-- Best wishes - Majikthise.
well, thats an odd question. Some people, not being blind, sleep with their eyes open. and alot of people sleep with their eyes closed (: however, i think for the most part they sleep with their eyes closed, or else their eyes would dry out.
No, they are not different in stuff like that, they just can't see, and I don't think they would be able to rest if they did.
I wouldn't think so - their eyes would dry out. Besides, it's natural for eyes to close when you're tired.