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Renat Kazakbaev, Mukharram Bikbov, Timur Gilmanshin, Rinat Zainullin, Gyulli Kazakbaeva, Songhomitra Panda-Jonas, Jost B Jonas; Prevalence of pterygium and its associations in a Russian population: the Ural Eye and Medical Study. Invest. Ophthalmol. Vis. Sci. 2019;60(9):6479.
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© ARVO (1962-2015); The Authors (2016-present)
To assess the prevalence of pterygium and its associations in a Russian population.
The population-based Ural Eye and Medical Study was carried out in a rural and an urban area in the region of Ufa / Bashkortostan 1400 km East of Moscow. Out of 7328 eligible individuals aged 40+ years, 5,899 (80.5%) individuals participated and underwent an ocular and general examination. Pterygium was diagnosed during slit lamp examination and on corneal photographs.
Data on the presence of pterygia were available for 5888 (99.8%) individuals. The mean prevalence of pterygia (any eye) was 138/5888 (2.3%;95% confidence intervals (CI):2.0,2.7). Bilateral pterygia were detected in 45 individuals (0.8%) and they were unilateral in 93 individuals (1.5%). The pterygium prevalence increased from 0.8% (95%CI:0.02,1.6) in the age group from 40-<45 years to 3.6% (95%CI:2.1,5.1) in the age group of 75+ years. In multivariate analysis, a higher prevalence of pterygium was associated with older age (P=0.006; OR: 1.03; 95%CI: 1.01, 1.04), rural versus urban region of habitation (P< 0.001; OR: 2.33; 95%CI: 1.57, 3.46) and lower level of education (P=0.03; OR: 0.89; 95%CI: 0.81, 0.99), while in that model the pterygium prevalence was statistically independent of sex (P=.34), Russian versus non-Russian ethnicity (P=0.59), presence of diabetes mellitus (P=1.00), arterial hypertension (P=0.86), vegetarian versus mixed diet (P=1.00), blood lipids (P>0.30), history of cardiovascular disease (P=0.49), or axial length (P=0.52).
In this rural and urban, typically multi-ethnic Russian study population aged 40+years, a higher prevalence of pterygium (mean: 2.3%) was correlated with older age, rural versus urban region of habitation and lower level of education while it was statistically independent of most other systemic or ocular parameters. A pterygium was not a biomarker for an internal medical disease.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.
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