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What do blind people see?
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Yes, official it is called Blind defined as a vision that is less than 20/40. Technical it called visual impairment, and it is a spectrum. Some people vision are blurry or they can see very small parts or they have floaters. When these or absolute loss of vision become less than 20/40 then the person is considered legally blind.
So now what they can see, if they can see, depends on the type and how bad the condition is.