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. 2014 Mar 11;7(3):168–176. doi: 10.1016/j.optom.2014.02.001

Figure 1.

Figure 1

Refractive error (RE), age and gender. (A) Prevalence of uncorrected refractive errors. Note the high prevalence of myopia and myopic astigmatism. (B) RE subtype prevalence in function of total RE prevalence in age groups. Note the high prevalence of myopia and myopic astigmatism in 10–13 years old students. (C) Uncorrected RE distribution in age groups: RE subtype prevalence in function of total RE prevalence and age group. Note the two-fold increase in mixed astigmatism and hyperopic astigmatism in 10–13 years old students as compared with 6–9 years old ones. (D) Refractive error (RE) subtype prevalence in function of total RE prevalence in gender. Note the high prevalence of myopia and myopic astigmatism in both genders. (E) Uncorrected RE distribution in genders: RE subtype prevalence in function of total RE prevalence and gender. Note the high prevalence of RE in females, in particular myopic astigmatism and myopia. z test: *p < 0.05, **p < 0.01, ***p < 0.001.