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

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Author(s)

    • PI Lian-Hong
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • CHEN Lin
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • LIU Qin
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • KE Ning
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • FANG Jing
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • ZHANG Shu
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • XIAO Jun
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • YE Wei-Jiang
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • XIONG Yan
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • SHI Hui
    • Department of Ophthalmology, Children's Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • ZHOU Xi-Yuan
    • Department of Ophthalmology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
    • YIN Zheng-Qin
    • Southwest Hospital, Southwest Eye Hospital, Third Military Medical University, Chongqing, People's Republic of China

Abstract

<b>Background: </b>The present study investigated the prevalence of refractive error, visual impairment, and eye diseases in school-aged children in western China.<BR><b>Methods: </b>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><b>Results: </b>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><b>Conclusions: </b>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.

Journal

  • Journal of Epidemiology

    Journal of Epidemiology 22(1), 37-44, 2012-01-01

    Japan Epidemiological Association

References:  37

Codes

  • NII Article ID (NAID)
    10030213040
  • NII NACSIS-CAT ID (NCID)
    AA10952696
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    09175040
  • Data Source
    CJP  J-STAGE 
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