Show xray X ray makes it possible to read with eyes shut detroit if sou want to see with your eyes closed or read through the back of your head you can visit an ray and do it the stunt Is not so crazy as it sounds for it was demonstrated at the american roentgen ray socie tys con mention here recently by dr A II 11 parle ot montreal doctor parle uses lead letters and pictures in his experiments these block the light from the X ray ma chine and the shadows of these blocks fall upon the retina of the eye even with your eyes closed making the am pres slon the bilue of this doctor parle ex pla ined Is that it enables a physician to tell whether or not a cataract oper atlon will be successful if the retina of the eye Is unharmed the cataract sufferer will be able to see the letters bv meana of the penetration of the kray machine doctor parle explained that the same apparatus placed at the back of the head will register upon the retina the letters or images must be placed upside down in the machine because our eyes reverse the images they see |