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RESEARCH STUDY

RESEARCH

Prevalence and Risk Factors of Refractive Error: A Cross-Sectional Study in Han and Yi Adults in Yunnan, China

AUTHOR:

Meng Wang, Jiantao Cui, Guangliang Shan, Xia Peng, Li Pan, Zhimei Yan, Jie Zhang, Yong Zhong, Jin Ma

SPONSOR/INSTITUTION:

National Science and Technology Pillar Program during the Twelfth Five-Year Plan Period sponsored by the Ministry of Science and Technology of China

YEAR PUBLISHED:

2019

PUBLICATION:

BMC Ophthalmology

KEY HIGHLIGHTS:

  • Few studies have investigated the prevalence of refractive error (RE) in older adults in China, and most have focused on East China.

  • This study determined the prevalence and risk factors of RE in Han and Yi adults aged 40–80 years in rural and urban areas in Yunnan Province, Southwest China.

  • Among 1626 participants, the age-adjusted prevalence rates of myopia, hyperopia, high myopia and astigmatism were 26.35%, 19.89%, 2.64%, and 56.82%.

  • Compared to the Yi population, the Han population had higher prevalence of myopia (31.50% vs 16.80%), high myopia (3.34% vs 1.31%) and astigmatism (60.07% vs 50.67%) but lower prevalence of hyperopia (16.58% vs 27.37%).

  • Myopia was also associated with height, time spent in rural areas, undergraduate/graduate education level, compared with primary school or lower education level) and diabetes.

  • Compared to the Yi population, the Han population had a higher prevalence of myopia, high myopia and astigmatism but a lower risk of hyperopia.

  • The prevalence of myopia in the Han population in underdeveloped Southwest China was similar to that of residents in East China or of Chinese Singaporeans under urban or rural settings.