Dr.Bijita Deb, B21272
Aim: was to compare keratometry values (K1-flat K and K2- steep K) between three instruments and WTW between verion and IOL Master-700. Methods: 308 eyes with mean age 58.59 years were taken preoperatively by single examiner. Results: K2 by verion vs IOL Master-700 (mean difference -0.5637 and p = 0.489) and manual vs IOL Master (mean difference -2.856 and p= 0.35) showed no significant difference. Other three instruments showed a significant difference for K1 (mean difference by verion vs IOL Master-700, manual vs verion and manual vs IOL Master-700 is 0.187, -0.0214 and -0.168 respectively and p=0.000). WTW showed no significant difference between verion vs IOL Master-700 (mean difference= -0.049 and p= 0.394) and can be used interchangeably. Conclusion: The verion system has good agreement with other two instruments for K2 but not for K1. This is the only study that compares verion, manual keratometer and IOL Master -700 for obtaining corneal power measurements and WTW.
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