My doctor shines a blue laser in my eye for a Glaucoma Test. The part I hate the most is when I have to get pictures of the inside of my pupils taken. I have a rare Pupil-thingy that made my pupil be mis-shapen. So they took pics inside my eyes and found scars in my pupils. But they do it every so often. They have your chin sit on a little platform and you're looking into a black closed-in area. You follow a green dot that's moving around, when it stops...*FLASH*. Hurts my eyes like a motherfucker. Especially my left one (the mis-shaped pupil one) because since my pupil isn't round, it can't "close" all the way...so more light gets in there anyways.