Why is short-sightedness on the rise?  Too much time indoors!

After studying more than 4,000 children at Sydney primary and secondary schools for three years, they found that children who spent less time outside were at greater risk of developing myopia.

The myopia boom
Short-sightedness is reaching epidemic proportions. Some scientists think they have found a reason why.

  1. Prolonged exposure to bright light increases production of retinal dopamine, which in turn affects the physical development of the eye.  Without enough exposure to bright light, the eye elongates a bit as it grows, causing myopia.

  2. +Alex Chekholko According to the article that is but one factor.