Predictability and Refractive Stability of the ACRIOL 128 Angularly Supported Phakic Lens over Three Years of Follow-up

Abstract

Objective: To determine the predictability and stability of ACRIOL 128 phakic lens implantation for the correction of high myopia in patients three years after treatment.

Methods: A prospective longitudinal descriptive study was performed with a three-year follow-up of 49 patients (91 eyes) with myopia corrected with ACR-128 phakic lens. Predictability and stability were determined through the following variables: estimated spherical component (EEC) and observed spherical component (CEO), spherical equivalent, keratometric cylinder, pre- and postoperative induced astigmatism.

Results: The predictive error of -0.07 ± 0.43 D, -0.07 ± 0.59 and -0.10 ± 0.60 in OD at three months, 12 months and three years, respectively, and -0.05 ± 0.47 D, -0.04 ± 0.49 and -0.05 ± 0.49 in OI at three months, 12 months and three years, respectively, was not significant. There was stability in the observed spherical component, keratometric cylinder and spherical equivalent, with no differences between three and twelve months; as well as at three years after surgery.

Conclusions: The predictive error was not significant in the study, demonstrating adequate predictability in the calculation of the phakic lens. The refractive parameters showed stability as no differences were found between three and twelve months, as well as three years after surgery.