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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12569
Loc: Cumberland, R I , USA42N71.4W
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Re: dark adaptation
08/05/06 12:27 PM
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Quote:
How long does it take your eyes to fully dilate?
About 10 seconds. It's not pupil dilation that gives you night vision.
It takes about 2 hours for your rhodopsin (visual purple) to regenerate after you look at bright lights. Computer screen, TV, headlights, they all deplete rhodopsin in seconds. Spend a day at the beach without sunglasses and it will take about 2 days for the bleaching effect to go away.
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
Edited by EdZ (08/10/06 09:24 AM)
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