Abstract

Background: Global advances in ophthalmology have created a greater need for ocular parameters in different clinical and diagnostic fields. One important ophthalmic parameter is the curvature of cornea which is commonly needed for intraocular lens power calculation before cataract and refractive surgery and helps ophthalmologists in contact lens fitting, diagnosis of several eye conditions such as keratoconus, keratoglobus and Marfan’s syndrome. Subjects and Methods: The data for the study were retrospectively collected from the case files of patients who had undergone cataract surgery from January 2017 to July 2017 in a private eye hospital Raipur, Chhattisgarh. The data collected were horizontal & Vertical curvature of cornea which was done by manual keratometer for calculating intraocular lens power (after applying various formulas) to be implanted during cataract surgery. Then by using various statistical methods the results were interpreted. Results: The total number of patients taken for the study were 600 and the total number of eyes were 600, out of which 300 (50%) were males and 300 (50%) females, with the age ranging from 45 to 80 years. The mean corneal refractive power for the total sample were K1 (vertically) 44.18±1.89D, K2 (horizontally) 44.74± 1.88D, ranges from 39 D to 51 D. Although corneal refractive power was slightly higher in female as compared to male but the difference was not significant. The values were almost similar in right and left eyes. Conclusion: The analysis might provide normative data for curvature of cornea required for IOL calculation in cataract patients of Chhattisgarh region. Data of the range will be useful as reference values in case the surgery is to be done at high volumes in surgical camps in rural areas where biometry equipment may not be available. There were no significant differences noted between male and female, right and left eyes in central Indian population.

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