Doctor insights on:
What Happens To Your Eyes When You Go From Dark To Light
What happens to your eyes if you are in the dark for a long period of time and then exposed to light?
Nothing dangerous: Eyes adapt to both light and dark fairly easily. In the dark, the pupils dilate to allow in whatever light there might be, and the retina's dark-seeing receptors (rods) are capturing the images you see. Once you enter the light, the pupils constrict rapidly and forcefully which may cause temporary discomfort. You may also find things excessively bright, but there is no danger in healthy eyes. ...Read moreSee 1 more doctor answer
When I close my eyes in the dark, i've noticed that I don't see absolute blackness. I see flickers of light and "noise". What is that? Is it normal?
Low light adaptation: Dark adaptation takes about 30-45 minutes to be complete. If after i hr in the dark you still cannot see you may have some sort of nightblindness. You should see an ophthalmologist. ...Read more
Sometimes I feel as though I can see light or colors when in a dark room, getting ready for bed, or when my eyes are just closed. Is this normal?
Mind playing tricks: I wouldn't be concerned about it unless u have other symptoms or problems. The brain is trying hard to see something and creating that illusion that something is there. Kind of like a phantom limb. Tinnitus is the same way. If u can't hear ur brains starts creating sound ...Read more
Light flash phenomen: This may represent a physiological retinal phenomenon, but if it is giving you concern you should seek a retinal consultation to verify that you have no retinal pathology of concern. ...Read more
Heterochromia: What you are describing is a condition called heterochromia, which simply means "different color." there are a number of causes of this relatively rare condition. It is certainly something to bring up with your pediatrician if they haven't already mentioned it. http://www.nlm.nih.gov/medlineplus/ency/article/003319.htm. ...Read moreSee 1 more doctor answer
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