By: Marc Sorenson, Sunlight Institute–
Among the many other horrors associated with lack of sunlight, myopia (nearsightedness) is now becoming of scientific interest. In the latest article written on the subject, Robin Wuffson, MD, discusses the research from Denmark, showing that deterioration of the eye leading to myopia (in children aged 8-14) is more common in the winter than in the summer months.
Another piece of research, reported only a few months ago, showed that actual exposure of the eye to sunlight was protective against myopia in people aged 15 to 50 years. If you search this site, you will find several other posts on sunlight and myopia. In my opinion the link is now irrefutable: Lack of sunlight can now be added to the list of environmental and nutritional mistakes that can lead to blindness.
“Do not take my Sunshine Away!”
 Sherwin JC, Hewitt AW, Coroneo MT, Kearns LS, Griffiths LR, Mackey DA. The association between time outdoors and myopia. Invest Ophthalmol Vis Sci. 2012 Jul 1;53(8):4363-70.