My father also had vision problems. And I very well remember how angry he was that he couldn't clearly see this or that thing, all his actions were labored due to vision problems. Until I convinced him to see a doctor. Now for several years he has been living a full life and I'm very glad that we didn't miss the moment and save his eyesight in time. In addition, for those who spend a lot of time in front of the monitor of their computer, and then immediately switch to the screen of their smartphone, there are special drops for dry eyes. Some people really need it, don't waste time, visit a doctor.