Anterior eye parameters and lens thickness measured by an intraoperative OCT and a swept-source OCT: comparison of hyperopic, emmetropic and myopic eyes

Abstract

PurposeTo evaluate if anterior chamber depth (ACD) and lens thickness (LT) measured by two different devices are affected by different eye lengths.MethodsACD and LT of 251 eyes (44 hyperopic, 60 myopic, 147 emmetropic) of 173 patients received with an iOCT-guided femtosecond laser-assisted lens surgery (FLACS) and the IOL Master 700 were compared.ResultsACD measured with the IOL Master 700 was −0.026 ± 0.125 mm smaller (p = 0.001) than that with the iOCT for all eye-groups (hyperopic: p = 0.601, emmetropic: p = 0.003; myopic: p = 0.094). However, differences in all groups were not clinically relevant. LT measurements (all eyes: −0.0642 ± 0.0504 mm) shows a statistically significant difference in all evaluated groups (p < 0.001). Only myopic eyes showed a clinically relevant difference in LT.ConclusionThe two devices show no clinically relevant differences in the eye-length groups (myopic, emmetropic, and hyperopic) for all ACD measurements. LT data shows a clinically relevant difference only for the group of myopic eyes.