Myopia boom (still no mention of vitamin D) – Nature
The myopia boom Nature April 2015
Short-sightedness is reaching epidemic proportions. Some scientists think they have found a reason why.
They claim decreased sunlight, rather than decreased Vitamin D
“In Seoul, a whopping 96.5% of 19-year-old men are short-sighted.”
“Other parts of the world have also seen a dramatic increase in the condition, which now affects around half of young adults in the United States and Europe — double the prevalence of half a century ago”

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See also VitaminDWiki
Hypothesis: Low vitamin D linked to Myopia by VitaminDWiki in 2010
Search VitaminDWiki for Myopia 40 items as of Jan 2014
Severe Myopia associated with low vitamin D and smoking (which also reduces vitamin D) - Jan 2014
UVB added in classroom reduced cavities, increased height, increased academics. etc
- Very low cost to add UVB to classrooms - probably will reduce Myopia
- Myopia, dry eye and Vitamin D – PhD 2017