Prevalence of Eye Diseases and Causes of Visual Impairment in School-Aged Children in Western China

DOI Web Site 参考文献57件
  • Pi Lian-Hong
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Chen Lin
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Liu Qin
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Ke Ning
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Fang Jing
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Zhang Shu
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Xiao Jun
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Ye Wei-Jiang
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Xiong Yan
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Shi Hui
    Department of Ophthalmology, Children’s Hospital, Chongqing Medical University
  • Zhou Xi-Yuan
    Department of Ophthalmology, the Second Affiliated Hospital, Chongqing Medical University
  • Yin Zheng-Qin
    Southwest Hospital, Southwest Eye Hospital, Third Military Medical University

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Background: The present study investigated the prevalence of refractive error, visual impairment, and eye diseases in school-aged children in western China.<BR>Methods: The survey was done in a representative county (Yongchuan District, Chongqing Municipality) of western China. Cluster random sampling was used to select children aged 6 to 15 years. We conducted door-to-door surveys and eye examinations including optometry, stereoscopic vision test, eye position and eye movement, slit lamp examination of the anterior segment, retinoscopy, and fundus examination after cycloplegia with 1% cyclopentolate.<BR>Results: Among 3469 children, data were available for 3079 (88.76%). The prevalences of eye diseases were, in descending order, refractive error (20.69%; 637/3079), conjunctivitis (11.76%; 362/3079), amblyopia (1.88%; 58/3079), color vision defect (0.52%; 16/3079), keratitis (0.36%; 11/3079), strabismus (0.29%; 9/3079), cataract (0.23%; 7/3079), pathologic myopia (0.19%; 6/3079), and ocular trauma (0.13%; 4/3079). The prevalence of corneal leucoma, corneal staphyloma, optic neuropathy, macular degeneration, and myelinated nerve fibers was 0.03% (1/3079) for each. The prevalence of visual impairment was 7.70% (237/3079), and the major causes of visual impairment were uncorrected refractive error (86.08%; 204/237), amblyopia (9.70%; 23/237), pathologic myopia (1.27%; 3/237), congenital cataract (0.42%; 1/237), and others (2.11%; 5/237).<BR>Conclusions: Among school-aged children in a less developed area of western China, refractive error was the most prevalent eye disorder, and uncorrected refractive error was the main cause of visual impairment.

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