An Advanced Lens Measurement Approach (ALMA) in post refractive surgery IOL power calculation with unknown preoperative parameters.

ABSTRACT:

Purpose

To test a new method to calculate the Intraocular Lens (IOL) power, that combines R Factor and ALxK methods, that we called Advance Lens Measurement Approach (ALMA).

Design

Retrospective, Comparative, Observational study.

Setting

Department of Medicine and Surgery, University of Salerno, Italy.

Methods

Ninety one eyes of 91 patients previously treated with Photorefractive Keratectomy (PRK) or Laser-Assisted in Situ Keratomileusis (LASIK) that underwent phacoemulsification and IOL implantation in the capsular bag were analyzed. For 68 eyes it was possible to zero out the Mean Errors (ME) for each formula and for selected IOL models, in order to eliminate the bias of the lens factor (A-Costant). Main outcome, measured in this study, was the median absolut

SUBMITTER: Rosa N 

PROVIDER: S-EPMC7447029 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature