It heats the air it zips through to five times the surface temperature of the sun. Still, around 90 percent of lightning-strike victims survive. Over the past three decades, lightning has killed an average of 51 people per year in the U.S. but left more than 500 injured and alive.
Computer vision syndrome. Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time.
Looking at a computer monitor, or other electronic visual displays for a prolonged period of time, can bring about frequent eye styes. Digital eye strain, also referred to as Computer Vision Syndrome (CVS) causes the user to experience dry eye conditions. Dry eyes can result in an imbalance in tear composition.