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Wednesday, August 12, 2009

How to permanently damage your retina

Do not stare at high brightness LEDs, because doing so may cause permanent damage to your eyes.
The optics of our eyes focus visible light onto the retina, which is the light sensitive part of our eyes, similar to the way a magnifying glass can focus an image of the sun onto a piece of paper. Just as the piece of paper might smolder and catch fire, a light that is brightly focused on your retina can cook and thus permanently damage your eye. Exposure to bright white and blue LEDs can also cause permanent damage to your eyes through photochemical action.
This South Korean woman is viewing a solar eclipse using powerful binoculars. It's not even a total eclipse - it's a 78% eclipse. Is it possible that these are special binoculars incorporating some type of filter?



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