The Effect of Short Acting Mydriatics on Intraocular Lens power Measurement Using IOLMaster® Biometry

Abstract

Thirty eyes of cataract patients were included in our study (15 left eyes and 15 right eyes). The mean age of the study population was 57.57 ± 8.61 (range, of 30-85 years). The aim of this study is to assess the agreement of IOL power and ocular biometry measurements before and after pupillary dilatation by using the IOLMaster. Our study revealed that dilatation does not affect the Holladay 2 calculated IOL power and we found that AL and keratometric biometry (K1, K2) were not affected by dilatation (p-value was 0.584, 0.804, 0.436, respectively); however, the ACD was significantly increased post8 dilatation (with mean difference 0.056; P-value < 0.05), that may be because the lens and iris plane move backward on dilatation. We normally schedule patients for at least two visits before the day of cataract operation due to the uncertainty about whether the use of cycloplegic eye drops would affect the IOL calculation power. Proving the hypothesis that pupillary dilatation has no effect on IOL calculation power would mean not only reducing the steps of the preoperative cataract surgery process, but also saving time and traveling expenses for the patients