text: why do some people wear sunglasses when they are indoors?  example a store or shopping mall.?   if you take good care of yourself (=your eyes), you have to keep them on, because if you take them off, your eyes are used to the light they get through the sunglasses and with the sudden "shot" of light that comes by taking them off, your eyes have to take in a massive dose of overexposure to uva/uvb sunlight !! (which explains why from a healthcare point of view, sunglasses aren't helpful att all!!)  happy sunbathing!!(without glasses,that is)  cheers,  laurens.