1. World Health Organization. Visual Impairment and blindness fact sheet. Available at: http://www.who.int/mediacentre/factsheets/fs282/en/index.html. Accessed December 13, 2012.
2. The prevalence of refractive errors among adults in the United States, Western Europe, and Australia;National Eye Institute Eye Diseases Prevalence Research Group;Arch Ophthalmol,2004
3. Prevalence of myopia and its association with body stature and educational level in 19-year-old male conscripts in Seoul, South Korea;Jung;Invest Ophthalmol Vis Sci,2012
4. Interventions to slow progression of myopia in children;Walline;Cochrane Database Syst Rev,2011
5. Advanced techniques in contact lens fitting;Wesley,1960