Indian Journal of Ophthalmology

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

Correspondence Address:
Ronnie George
Medical Research Foundation, Sankara Nethralaya, 18, College Road, Chennai - 600 006
India

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.


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