Dr. JAI GOPAL AGRAWAL

Abstract

To get correct IOLpower after myopic LASIK/PRK and compare different powers obtained from ASCRS calculator and EVO calculator v2.0.

Calculations done for 16 cataract by ASCRS calculator and EVO calculator v2.0 after getting maximum available prior data. Using actual post cataract refraction as target refraction, predicted IOL power calculated for each. IOL prediction error was obtained by subtracting predicted IOL power from power of IOL implanted. Arithmetic IOL prediction errors, variances of mean arithmetic IOL prediction error, median refractive prediction error (RPE) and percent of eyes within 0.5 D and 1.0 D of RPE were calculated. Median RPEs were .35, .43, .36, .51, .48, .39, .34 and .35 respectively for OCT, Barrett True K, Masket, Wang-Koch-Maloney, Shammas, Haigis-L, Average and EVO calculator v2.0 (p < 0.05). ASCRS calculator is promising, but Average of OCT, Masket, Barrett True K and EVO calculator v2.0 gives excellent results.

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