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Let me know how that goes, seems like it would be damaging to your eyes.
Another name for this is "instantaneous recognition". It's used in some speed reading courses without turning the lights on and off (which WILL damage your eyes).

You take a card with a box cut out it, and read lists of words/numbers, pulling the card down the page as fast as you comfortably can. Eventually you'll be relying on the after-image and it will drastically increase your reading speed.
It won't, it will be tiring but it will have no long-term effects on your eyes.
What you feel is your muscles adjusting to the amount of light, as if you are doing some physical exercise (source:Dr.Oz about myths even doctors believe.)
 

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Um. No. I've had more eye dilation glaucoma tests than I can possibly count and shoving that much light into your eye while the pupil is enlarged will damage the optic nerve. Just because a doctor can't measure it (and those tests are designed only to show extensive damage) doesn't mean it doesn't happen.

Light eyes, just like light skin, are also more sensitive to light.

My eyes are very sensitive to light and it's got nothing to do with the muscles. I exercise my eyes regularly and know that that feels like.
Well, doctor Oz might be wrong :). Thanks for sharing.
 
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