Abstract

Study Design : Hospital- based prospective cross-sectional study. Purpose:There is a need to evaluate data with reference to factors which disrupt the surface topography of the cornea in Indian population for better identification of pathology (including ectasia, pterygium, chalazion) and for optimum management with the available technology that is Scheimpflug-Placido Sirius topographer. Methods :total of 90 patients (90 eyes), comprising of 30 in each group, Group A – 30 eyes of patients with corneal ectasia ,Group B – 30 eyes of unilateral pterygium , and Group C – 30 eyes having eyelid chalazion with a control group of 30 normotensive age and gender matched individuals for compare the topography parameters. Results :A statistically significant association was found for all study parameters between ectatic groups and the Control group (p=<0.001, respectively).Conclusion: Sirius topographic parameters, are highly effective in distinguishing between pathological and normal eye.