Why do you need glasses to prevent permanent eye damage during eclipse?

AUSTIN (KXAN) — We're less than a day away from the first of two solar eclipses over the next few months.On Oct. 14, an annular eclipse will briefly dim the skies over sections of the western U.S. and Central and South America. Viewing the eclipse safely will require some prep on your part, however."(I see) a few patients a year that have either accidentally looked at the sun or were trying to view an eclipse," said Dr. Andrew Neighbors, a Seattle-based optometrist.According to Neighbors,