On average, a person uses gadgets for at least 4 hours a day. Plus 8 hours of looking at the monitor at work. And also devotes several hours to TV or home computer. However, even such a load will not damage vision if you do simple two-minute exercises every half hour:
Look down, left, and right without opening your eyes.
Gently rotate your eyes in both directions, as if massaging the back of the eyelid with eyeballs.
Warm your palms together and place them over your closed eyes.
