LOL, as far as i can remember, my mother often told me that watching TV will make my sight worse when I was young. NOW I am an adult, I came to know watching TV will not make my sight worse, but making our eyes stare screen for long time will make our eyes worse. Consequently, when you want to make your sight better or just keep them good as before, also you want to see television. I have a suggestion that will help you. When you have been watching TV for some time, you had better stop it and let your eyes have a nice rest. For instance, you can make your eyes stare at the green plants fro a while, besides, you can close your eyes letting them have a rest. If you do so, I think there will be less harm for your eyes. Hope you are happy with the answer.