Refractive Predictability in Initial Cases Using Intraoperative Aberrometry
To compare the predictability of intraocular lens (IOL) calculations between measurements taken during the initial adoption of intraoperative aberrometry (ORA) and standard IOL calculation formulae.
25 eyes underwent cataract surgery with acrylic IOL implantation; these were the initial eyes measured by the surgeon using ORA. Haigis and SRK-T formulae were also used to determine IOL power. Prediction errors (1 month refractions) and variances were analyzed.
Mean prediction errors were +0.22+/-0.42 (ORA), +0.19+/-0.47D (Haigis) and +0.20+/-0.41D (SRK-T). No statistically significant difference in prediction error or variances could be identified.
Initial use of intraoperative aberrometry, prior to any optimization, appears to be similar in predictability to standard IOL calculation formulae.