Ronnie George|Prema Raju|Ramesh S Ve|Hemamalini Arvind|Mani Baskaran|Govindaswamy Kumaramanickavel|McCarty Catherine|Lingam Vijaya
Comparison of refractive errors and factors associated with spectacle use in a rural and urban South Indian population
purpose compare prevalence refractive errors factors associated spectacle use rural urban south indian population materials methods four thousand eight hundred subjects age 39 years rural urban tamil nadu enumerated populationbased study participants underwent complete ophthalmic evaluation including bestcorrected visual acuity bcva objective subjective refraction 3924 rural responders 6391 3850 urban responders 8164 phakic right eye bcva 2040 better included study association spectacle use refractive errors different parameters analysed using logistic regression statistical analysis chi square test chi square trend pearsons correlation coefficient used analysis results spectacle use significantly higher positively associated literacy employment urban population age genderadjusted prevalence emmetropia myopia spherical equivalent se 050 diopter sphere ds high myopia se 500ds hyperopia se 050ds astigmatism 8804 050 diopter cylinder dc 468 310 43 179 604 respectively rural population 290 176 15 519 591 respectively urban population prevalence emmetropia decreased age p conclusion spectacle use found significantly lower rural population pattern refractive errors significantly different populations