I Knew Our Parents Were Lying! (page 9)
Watching too much TV will damage your eyesight
This assertion has been used to encourage kids everywhere to go outside and get some exercise, and is a story that has been doing the rounds more or less since the television was invented. If you watch a lot of TV, you may suffer from eye strain, as the muscles that cause the eye to focus become tired. But this is actually less likely to affect children than adults, as children’s eyes are better at adjusting focus and are therefore less susceptible to eye strain..