Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Accuracy of IOL power calculation in post RK eyes

Poster Details

First Author: V. Shetty INDIA

Co Author(s):    S. Haldipurkar   S. Jain   T. Haldipurkar   D. Venkataramani   M. Setia        

Abstract Details


To compare the various methods for Intra ocular power (IOL) calculation post radial keratotomy (RK) and to predict the accurate method.


This study was conducted in Laxmi Eye Institute, Panvel, India


Retrospective interventional case series of 26 post RK eyes of 18 patients who underwent IOL implantation. IOL power calculated using keratometry values of IOL-M, corneal topography and ESCRS formula. The predicted refractive error with each was compared to actual post op refraction due to implanted IOL power.


Mean age-50.6 years (SD 8.0). Median error with each method was IOL-M 1.23 [IQR -1.71 to -0.50], Topo -1.0 [IQR -1.98 to -1.5] & ESCRS -0.56 [IQR -1.35 to -0.12]. Multivariate linear regression analysis showed a unit increase in simK was significantly associated with post operative SEQ errors (0.55 [95% CI 0.07 to 1.03 p=0.03], least in ESCRS (0.29 [95% CI -0.2 to 0.60 p=0.06]).


Most accurate method for IOL calculation in post RK eyes was by ESCRS formula yielding least post op residual refractive error.

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