NASA outlines do's and don'ts of viewing the eclipse: The aging process can provide a natural filtering effect in older people and reduce risk of retinal damage. Ralph Chou in an article published by the National Aeronautics and Space Administration.Ĭhou said children and young adults are most at risk as bright light and radiation from the sun can cause heating and cook the exposed tissue of the eye. "The concern over improper viewing of the sun during an eclipse is for the development of 'eclipse blindness' or retinal burns," said associate professor of optometry Dr. Look for glasses that carry this certification insignia: ISO 12312-2. Eclipse glasses are available for purchase at big-box stores, electronics supply outlets and online.
These special filters are used in eclipse glasses and hand-held solar viewers. The only safe way to look directly at the sun is through special-purpose solar filters, according to the American Academy of Ophthalmology. When the moon crosses in front of the sun skies will darken, stars will twinkle and millions of Americans will be treated to an astronomical show. A total solar eclipse visible in the United States is rare – and precious, just like your vision.
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