We use computer everyday in our daily life, it's inevitable. You know long time eye use will cause vision problems such as myopia, glaucoma, cataract etc. It's abnormal for the eyes burn while watching video. That because of the fatigue of eyes, it will get dry eye, tears, eye swollen, sore eye or blur vision symptom later if you not pay attention to this situation. This just because long time use of the eyes to watching. The screenshot are too dazzling to the young people, it hurt the visual purple to makes color cast and hurt the visual pigments. If you likes watching video while movement, that will make you feel dizzy and hurt ciliaris for a long time, then lead to myopia. You'd better take care you're your eyes, binding the time of video watching and make sure the computer or TV in modest rays' condition.
Yes, playing video games can sometimes cause burn eyes. First, your eyes will get dry due to no blinking and concentrating on one thing for a long time.
Second, the lighting from the computer screen will harm your eyes.
So pay attention to that, give your eyes some rest when they are too tired.
A whole afternoon? A long time! So it is not strange that you suffer burn eyes after playing video games because when you play games, you fix your eyes on the things, even without blinking your eyes one time. A whole afternoon passes, thus you strain your eyes and feel your eyes burning. You should have rested your eyes for 15 minutes to 20 minutes after playing the video game for an hour.