COMMUNITY EYE CARE
Year : 2008 | Volume
: 56 | Issue : 2 | Page : 139--144
Comparison of refractive errors and factors associated with spectacle use in a rural and urban South Indian population
Raju Prema1, Ronnie George1, Ramesh Sathyamangalam Ve1, Arvind Hemamalini1, Mani Baskaran1, Govindaswamy Kumaramanickavel1, McCarty Catherine2, Lingam Vijaya1
1 Glaucoma Project, Vision Research Foundation, Sankara Nethralaya, Chennai, India
2 Marshfield Medical Research Foundation, WI, USA
Purpose: To compare the prevalence of refractive errors and factors associated with spectacle use in a rural and urban south Indian population.
Materials and Methods: Four thousand eight hundred subjects (age >39 years) each from rural and urban Tamil Nadu were enumerated for a population-based study. All participants underwent a complete ophthalmic evaluation including best-corrected visual acuity (BCVA), objective and subjective refraction. Out of 3924 rural responders 63.91% and out of 3850 urban responders 81.64% were phakic in the right eye with BCVA of 20/40 or better and were included in the study. Association of spectacle use and refractive errors with different parameters were analysed using logistic regression.
Statistical Analysis: Chi square, t test, Chi square for trend and Pearson«SQ»s correlation coefficient were used for analysis.
Results: Spectacle use was significantly higher and positively associated with literacy and employment in the urban population. The age and gender-adjusted prevalence of emmetropia, myopia of spherical equivalent (SE) ≤-0.50 diopter sphere (DS), high myopia (SE ≤-5.00DS), hyperopia (SE >0.50DS) and astigmatism ≤ 0.50 diopter cylinder (DC) were 46.8%, 31.0%, 4.3%, 17.9% and 60.4% respectively in the rural population and 29.0%, 17.6%, 1.5%, 51.9%, 59.1% respectively in the urban population. The prevalence of emmetropia decreased with age ( p < 0.001); prevalence of myopia and high myopia increased with age ( p = 0.001) and were associated with nuclear sclerosis ( p = 0.001) in both populations. Hyperopia was commoner among women than men ( p = 0.001); was positively associated with diabetes mellitus ( p = 0.008) in the rural population and negatively with nuclear sclerosis ( p = 0.001) in both populations.
Conclusion: Spectacle use was found to be significantly lower in the rural population. The pattern of refractive errors was significantly different between both populations.
Medical Research Foundation, Sankara Nethralaya, 18, College Road, Chennai - 600 006
|How to cite this article:|
Prema R, George R, Sathyamangalam Ve R, Hemamalini A, Baskaran M, Kumaramanickavel G, Catherine M, Vijaya L. Comparison of refractive errors and factors associated with spectacle use in a rural and urban South Indian population.Indian J Ophthalmol 2008;56:139-144
|How to cite this URL:|
Prema R, George R, Sathyamangalam Ve R, Hemamalini A, Baskaran M, Kumaramanickavel G, Catherine M, Vijaya L. Comparison of refractive errors and factors associated with spectacle use in a rural and urban South Indian population. Indian J Ophthalmol [serial online] 2008 [cited 2021 Feb 25 ];56:139-144
Available from: https://www.ijo.in/article.asp?issn=0301-4738;year=2008;volume=56;issue=2;spage=139;epage=144;aulast=Prema;type=0