Prevalence of Refractive Errors among High School Students in Western Iran.

Also, as demonstrated in Table 1 , the prevalence of astigmatism had an increasing trend from 7.3% in 14 years old students to 27.4% in 18 year old subjects (P=0.008).

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Most studies indicate that the prevalence of astigmatism is high in infancy and follows a decreasing trend towards adolescence. 40 In summary, based on the results of the present study, more than half of high school students had refractive errors.

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