CBS News More screen time causing vision problems during pandemic, doctor warns Americans are worried about how increased screen time during the pandemic will impact their eyes. According to a report by Eyesafe Nielsen, the average screen time per person rose 60%, to more than 13 hours a day, in March 2020. Dr. Christopher Starr, an ophthalmologist at Weill Cornell Medicine in New York, told "CBS This Morning" co-host Gayle King that the more time Americans spend gazing at their screens, the less they are blinking. "It's multi-factorial. We call it the computer vision syndrome, and it combine...