![]() To the front of the eye, this could cause photokeratitis, which is akin to a sunburn on the cornea. Q: Why shouldn’t you look directly at the sun during the eclipse?Ī: Excess UV radiation from the sun can damage the eyes. Specifically, there should be clear labeling on the viewer that says ISO 12312-2. The viewers must be in compliance with the requirements of the International Organization for Standardization to be considered safe. ![]() This applies not only during an eclipse it is NEVER safe to look directly at the sun without proper filters.Įclipse viewers have special filters that blocks out the harmful levels of light and radiation from the sun and allow only a small fraction of that through the filter - limited solar ultraviolet A and B radiation to a maximum of 0.0032%, and solar infrared radiation to a maximum of 3%. The American Astronomical Society has more instructions on their website if you’re interested in a “do-it-yourself” project that could be fun for the family.ĭirect viewing means you’d look directly at the sun, and the only safe way to do this is through an eclipse viewer. There are other ways to create a pinhole projector or a sun funnel to view the eclipse indirectly. As the eclipse occurs, you’ll see the projected image of the sun going from round to a crescent shape. One easy way is to form a waffle pattern with your fingers, with your back toward the sun the small holes between your fingers form a pinhole effect, and that projects an image of the sun on the ground. Question: How can I protect my eyes during the eclipse? How can I safely watch it?Īnswer: The best way to protect your eyes is to either view the eclipse indirectly using a pinhole projector, or to view it directly with an eclipse viewer.įor indirect viewing, do not look at the sun, but instead look at a projection of the sun or a shadow of the eclipse. Hin Cheung, a clinical assistant professor at the Indiana University School of Optometry, explains how to prepare to view both eclipses safely. The path of totality includes Indiana University campuses in Bloomington, Columbus, Kokomo, Indianapolis and Richmond.ĭr. On April 8, cities in 13 states will experience a total solar eclipse. Photo courtesy of the School of Optometry. ![]() Those living in Indiana will experience it as a partial solar eclipse, where just about 50% of the sun will be covered by the moon. An annular solar eclipse, where the moon partially covers the sun, will pass over the United States on Saturday, Oct.
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