Angle Alpha And Angle Kappa Agreement Between Iol Master, Itrace And Pentacam Measurements

Currently, refractive cataract surgery is a well-established concept. The use of multifocal or extended depth of focus IOLs with large angle Alpha and angle Kappa might enhance higher-order aberrations or coma aberrations, potentially causing post-operative problems. Precisely measuring the angles before surgery was a critical step in selecting the IOLs tailored to the individual. Therefore, this study was aimed to compare the agreement of the measurements or calculations of angle Alpha and angle Kappa obtained from Pentacam, iTrace, and IOLMaster 700.

A tertiary hospital in İzmir, Turkiye

We included consecutive patients who were screened for preoperative evaluations for cataract and/or refractive surgery. The measurements taken by Pentacam, iTrace, and IOLMaster 700 were recorded. All three devices were compared for the consistency.

There were 34 right eyes included. All measurements were agreed among Pentacam, iTrace, and IOLMaster 700 (p=0.140 for Angle Alpha; p=0.201 for Angle Kappa). Besides, the pairwise comparisons of devices were also similar in all measurements. 

The angle Alpha and Kappa, measured showed inadequate agreement, prompting ophthalmologists to consult readings from several devices.