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Thursday, August 17, 2017

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Reposted from O!Daddie.

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Luc





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Michael Lachlan





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Oracio




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As an Optometrist, I want to express concern that I have about the solar eclipse on Monday, Aug 21. There are serious risks associated with viewing a solar eclipse directly, even with the use of solar filter glasses.

We have to keep in mind that some people will encounter the inability to control every aspect of this exercise. For instance, true solar eclipse glasses are made for adults.

If the solar glasses do not filter out 100% of the harmful UV rays, if they are not used absolutely perfectly, or should there be a manufacturing defect in any of them, this will result in permanent and irreversible vision loss for any eye exposed.

Just like sunburn to the skin, the effects are not felt or noticed immediately. I have a great fear that I will have patients in my office on Tuesday, Aug 22 who woke up with hazy, blurry vision that I cannot fix.

It is a huge risk to watch the eclipse even with the use of solar glasses. There is no absolutely safe way to do so other than on TV.

As the eclipse passes over many places, the moon will not block 100% of the sun. Because so much of its light is blocked by the moon, if one looks at it without full protection, it does not cause pain as looking at the sun does on a regular day. Normally if you try to look at the sun, it physically hurts and you can’t see anything.

During an eclipse, however, it is easier to stare for a bit, and even less than 30 seconds of exposure to a partially eclipsed sun, you can burn a blind spot right to your most precious central vision. With solar glasses you can’t see ANYTHING except the crescent of light of the sun.

Please, please be safe. Watch it on television.

Thanks Randall!

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Wednesday, August 16, 2017