If blind people wear dark glasses, why don deaf people wear earmuffs? –?
A lot of low vision/legally blind people wear dark glasses because it actually helps them see better – their eyes are too weak to handle bright lights and it just washes out everything in their field of vision, thereby blinding them. Think of yourself on a super bright day without sunglasses, except worse. On the other hand, most deaf people do not have the problem of their ears not being able to handle the vast quantity of sound pouring in on them, it is simply not analogous.
