"FILE - In this Sunday, Dec. 2, 2012 file photo, reporter Anderson Cooper arrives at CNN Heroes at The Shrine Auditorium in Los Angeles. Cooper says a reporting assignment turned into a temporary blindness scare. On his talk show Tuesday, Dec. 4, Cooper said he was in Portugal last week working on a story for ""60 Minutes,"" spent two hours on the water and then suffered a 36-hour loss of sight. (Photo by Dan Steinberg/Invision/AP, File)"