The Increasing Prevalence of Myopia and High Myopia Among High School Students in Fenghua City, Eastern China: A 15-Year Population-Based Survey
Myopia is the leading cause of preventable blindness in children and young adults.
Multiple epidemiological studies have confirmed a high prevalence of myopia in Asian countries. However, fewer longitudinal studies have been performed to evaluate the secular changes in the prevalence of myopia, especially high myopia in China.
The present study investigates trends in the prevalence of myopia among high school students in Fenghua city, eastern China, from 2001 to 2015.
From 2001 to 2015, the prevalence of overall myopia increased from 79.5% to 87.7% while the prevalence of low myopia decreased from 32.7% to 24.4%.
High myopia and very high myopia contributed the major part of the increasing trend of myopia prevalence (contribution rate 27.00% and 69.07%, respectively).
During the 15-year period, there was a remarkable increase in the prevalence of high and very high myopia among high school students, which might become a serious public health problem in China for the next few decades.