Posters

Posterior chamber phakic IOL V4C model – Comparison of safety and complications for the correction of low-to-moderate and high myopia

Poster Details

First Author: M.João PORTUGAL

Co Author(s):    C. Pinto   J. Costa   F. Faria Correia   N. Franqueira   T. Monteiro        

Abstract Details

Purpose:

Phakic intraocular lens (pIOL) implantation for the treatment of myopia under -6,00 D is an alternative surgical procedure to corneal laser ablative techniques. Visual and refractive results for pIOL for moderate to high myopia have been extensively described. The purpose of this paper is to evaluate and compare the safety and complications of posterior chamber pIOL ICL model V4C for the correction of low-to-moderate and high myopia.

Setting:

Ophthalmology Department, Hospital de Braga, Portugal

Methods:

Retrospective, comparative study of patients submitted to posterior chamber pIOL ICL V4C for the correction of myopia. Inclusion criteria: age > 20, stable refraction for 12 months, ACD > 2,80 mm, normal endothelial profile and normal topography. Minimum follow-up was 12 months. Analysed parameters: uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), subjective refraction (sphere, cylinder and spherical equivalent SE), safety and efficacy indexes, predictability evaluation, mean endothelial cell loss. Two groups of patients were created for analyses: group 1 (SE equal or inferior to -6,00 D) and group 2 (SE superior to -6,00 D).

Results:

A total of 573 eyes were included, 167 in group 1 and 406 in group 2. At 1-year postoperative, uncorrected and corrected visual acuities were 0.02±0.80 and -0.01±0.92 logMAR (group 1) and 0.05±0.70 and 0.01±0.80 logMAR (group 2), with an efficacy index of 1.04±0.16 and 1.14±0.27. Respectively, 85.0% and 80.8% eyes were within 0.5 D of the targeted refraction and postoperative manifest refraction changes were -0.09±0.27 D and -0.10±0.36 D. Intraocular pressure did not change significantly. Mean rate of endothelial cell loss was 1.11% and 1.14%, respectively. We observed 1 case of anterior subcapsular cataract (group 2). ICL exchange occurred in 2 cases (group 1) and 4 cases (group 2). No vision-threatening complications were reported.

Conclusions:

In this real-life study, ICL implantation revealed a good safety profile for the correction of both low-to-moderate and high myopia. After ICL implantation, we showed comparable 1-year postoperative efficacy, predictability and stability as well as comparable rates of complications for low-to-moderate and for high myopia patients.

Financial Disclosure:

None