There was a study done by the University of Waterloo on nearsightedness in children which found that only 6% of children between the ages of 6 and 8 were nearsighted but that figure rose to 28% for 11 to 13 year old.
There has been a lot of conjecture about the cause of this. Personally as someone who has gone from perfect vision to significantly less so over a seemingly short period of time I have always blamed it on the amount of screen time I have had. The study on the other hand came up with a far more interesting tidbit of information.
If you are wondering what you might be able to do to help your child from becoming nearsighted the best answer clinical researcher and lead investigator of the study, Dr. Mike Yang, has to offer is to give them one more hour a week outside. He says that could reduce their chance of becoming nearsighted by 15%.
A little less screen time couldn’t hurt either.
Dr. Yang also encourages parents to have their children’s eyes checked once a year beginning when they are six months old.