How to tell if you damaged your eyes by looking at the solar eclipse without glasses

How to tell if you damaged your eyes by looking at the solar eclipse without glasses

Everyone watching the US solar eclipse today (Aug. 21) was warned again and again: Wear certified protective glasses. But if you forgot to buy glasses, or you left them at home, or your name is Donald Trump, then it was near-impossible to ignore the temptation of staring directly at the sun. (And if you did,…