Refractive Error Study in Children: results from Shunyi District, China.

By Jialiang Zhao, Xiang-jun Pan, R. Sui, S. Muñoz, R. Sperduto, L. Ellwein. American journal of ophthalmology-glaucoma, 2000

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Refractive error in children in an urban population in New Delhi. (2002, background): “Amblyopia was reported as the cause of impairment for eyes with best corrected visual acuity of 20/40 or worse and no apparent organic lesion, so long as one or more of the following criteria were met: (1) esotropia, exotropia, or vertical tropia at 4 m fixation or exotropia or vertical tropia at 0.”
Refractive error in children in a rural population in India. (2002, result): “More negative measurements with autorefraction were also recorded in the Chinese study.(6) Visual acuity testing was also highly reliable.”
Worldwide prevalence and risk factors for myopia (2011, neutral): “in 15-year-old males and females respectively.(34) In the rural region of Southern China, 36.”
How genetic is school myopia? (2005, background): “Ideally, data should be presented by year of age for periods of rapid development of myopia, as in the studies of the development of myopia in children using a common Refractive Error Study in Children protocol carried out in China (Zhao et al., 2000; He et al., 2004), Chile (Maul et al., 2000), Nep”
The epidemics of myopia: Aetiology and prevention (2017, positive): “The RESC studies provide one of the most consistent sets of data, but the oldest children examined were 15 years-old (Dandona et al., 2002b; Goh et al., 2005; He et al., 2004, 2007; Maul et al., 2000; Murthy et al., 2002; Naidoo et al., 2003; Pokharel et al., 2000; Zhao et al., 2000).”