Solar eclipse: Protect your eyes by avoiding these shady glasses

As excitement on social media about the Aug. 21 solar eclipse heats up, experts are urging people to take good care of their eyes when they enjoy the spectacle in Canadian skies.
Ralph Chou, a University of Waterloo optometry professor and president of the Royal Astronomical Society of Canada, says that staring at the sun for more than a few seconds will cause harm. He says the eye feels no pain so it will be too late to look away from potential retina-burning solar rays before a person notices