Auto-translated
Guys, this is complete nonsense. Don't waste your money. If you spend a lot of time at the computer, look away from the screen every half hour or hour, for example, look out the window. Do some eye exercises for at least five minutes, give your eyes a rest. And when it gets dark in the room, turn on the light immediately; don't sit in front of the monitor in the dark, it's very harmful. And if you have vision problems and wear glasses, wear your regular glasses while using the computer.