Why doesn't it damage your eyes to look at light after they've been dilated?
November 9, 2009 4:52 PM Subscribe
I'm posting for my wife who just got her eyes dilated at 4 p.m. (so she can't look at the computer to type this herself). I tried to Google my question and couldn't come up with any satisfactory answers. The question is why doesn't dilating your eyes and then viewing any form of light harm your eyes?
posted by LillyBird to health & fitness (10 answers total) 1 user marked this as a favorite
The pupils adjust to regulate how much light is taken in. Is this a safeguard? I don't see how it's not damaging your eyes to shine a bright light in them when your pupils are fully dilated, because, and I may be wrong, but I've never seen pupils naturally get this big. But then again, you need light to view your eyes so maybe they do in a pitch dark room.
I read Catch Me If You Can, and when Frank was imprisoned in a French dungeon, deprived of any light, they had to slowly reintroduce him to even the dimmest light so not to damage his eyes. Why was this and how would this relate to dilation?
I hope I'm being clear enough. I just want to know why it isn't damaging because the eye doctor told her to come in every year, and it seems like over the course of a lifetime that would be a lot of damage, if damage is occurring.
Thanks so much!