The May 2013 issue of the professional journal Ophthalmology contains results of a study that builds upon previous research that identified a link between children's time spent outdoors and nearsightedness.
Two elementary schools in Taiwan took part in the study which was conducted between 2009 and 2010. All of the children at one school spent a total of 80 minutes outside every day. The other school did not have outside recess time. Eye exams were conducted on all of the students at the beginning of the study and then again at the end of the study. The results demonstrated that significantly fewer children in the school that required recess became nearsighted or were on their way to becoming nearsighted than the students at the school that did not have outside recess.*
