The prevalence of and risk factors associated with pterygium in a rural adult chinese population: The Handan eye study

Lan Ping Sun, Wei Lv, Yuan Bo Liang, David S. Friedman, Xiao Hui Yang, Li Xia Guo, Yi Peng, Ning Li Wang, Jie Jin Wang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Purpose: To describe the prevalence and risk factors for pterygium in a rural adult Chinese population. Methods: A total of 7557 people aged 30 years and over were randomly selected from 13 villages in a rural county, Yongnian, within Handan district, Hebei Province of China. All eligible subjects were invited to undergo a comprehensive eye examination. A slit-lamp was used to examine the anterior segment for evidence of pterygium. Pterygium was graded for severity (G1 to G3) by visibility of episcleral vessels. Results: Of 6685 participants (88.5% of 7557) included in this study, pterygium was present in 401 (6.0%). Using direct standardization to the 2000 China population census for rural residents, the prevalence of pterygium was 7.1% (95% confidence interval [CI], 6.5-7.8%) among subjects aged 40+ years, and 4.8% (95% CI 4.3-5.3%) when including those aged 30-39 years. Pterygium was more common in men than in women (age-adjusted odds ratio [OR] 2.0, 95% CI 1.4-2.8). Prevalence increased with age (OR 1.8, 95% CI 1.6-2.1 per decade increase in age). Current smoking appeared to be protective (OR 0.5, 95% CI 0.4-0.7). Of eyes with any pterygium, 4.6% (95% CI 1.9-7.3%) had low vision. Conclusion: Approximately one in ten adults had pterygium in this rural Chinese population. Age and male sex were positively, and current smoking negatively associated with the prevalence of pterygium.

LanguageEnglish
Pages148-154
Number of pages7
JournalOphthalmic Epidemiology
Volume20
Issue number3
DOIs
Publication statusPublished - 1 Jun 2013
Externally publishedYes

Keywords

  • Cross-sectional study
  • Handan
  • Pterygium

ASJC Scopus subject areas

  • Epidemiology
  • Ophthalmology

Cite this

Sun, Lan Ping ; Lv, Wei ; Liang, Yuan Bo ; Friedman, David S. ; Yang, Xiao Hui ; Guo, Li Xia ; Peng, Yi ; Wang, Ning Li ; Wang, Jie Jin. / The prevalence of and risk factors associated with pterygium in a rural adult chinese population : The Handan eye study. In: Ophthalmic Epidemiology. 2013 ; Vol. 20, No. 3. pp. 148-154.
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abstract = "Purpose: To describe the prevalence and risk factors for pterygium in a rural adult Chinese population. Methods: A total of 7557 people aged 30 years and over were randomly selected from 13 villages in a rural county, Yongnian, within Handan district, Hebei Province of China. All eligible subjects were invited to undergo a comprehensive eye examination. A slit-lamp was used to examine the anterior segment for evidence of pterygium. Pterygium was graded for severity (G1 to G3) by visibility of episcleral vessels. Results: Of 6685 participants (88.5{\%} of 7557) included in this study, pterygium was present in 401 (6.0{\%}). Using direct standardization to the 2000 China population census for rural residents, the prevalence of pterygium was 7.1{\%} (95{\%} confidence interval [CI], 6.5-7.8{\%}) among subjects aged 40+ years, and 4.8{\%} (95{\%} CI 4.3-5.3{\%}) when including those aged 30-39 years. Pterygium was more common in men than in women (age-adjusted odds ratio [OR] 2.0, 95{\%} CI 1.4-2.8). Prevalence increased with age (OR 1.8, 95{\%} CI 1.6-2.1 per decade increase in age). Current smoking appeared to be protective (OR 0.5, 95{\%} CI 0.4-0.7). Of eyes with any pterygium, 4.6{\%} (95{\%} CI 1.9-7.3{\%}) had low vision. Conclusion: Approximately one in ten adults had pterygium in this rural Chinese population. Age and male sex were positively, and current smoking negatively associated with the prevalence of pterygium.",
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The prevalence of and risk factors associated with pterygium in a rural adult chinese population : The Handan eye study. / Sun, Lan Ping; Lv, Wei; Liang, Yuan Bo; Friedman, David S.; Yang, Xiao Hui; Guo, Li Xia; Peng, Yi; Wang, Ning Li; Wang, Jie Jin.

In: Ophthalmic Epidemiology, Vol. 20, No. 3, 01.06.2013, p. 148-154.

Research output: Contribution to journalArticle

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AU - Sun, Lan Ping

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