FFS, Goffik, you're not supposed to look through the binoculars, you hold a piece of card behind the eyepiece and project an image from the binoculars onto it. I once suffered complete retinal shut-down from watching someone welding and for several hours I was totally blind. My eyes felt like they were filled with tiny shards of glass. It was very scary. My vision slowly returned, but was foggy for several days.