Posters

10 years of phakic intraocular lens explantation in a tertiary centre

Poster Details

First Author: P.Baptista PORTUGAL

Co Author(s):    J. Marques   A. Abreu   S. Monteiro   M. Pinto           

Abstract Details

Purpose:

To describe and characterize the population submitted to phakic intraocular lenses (PIOLs) explantation between 2010 and 2020.

Setting:

Centro Hospitalar Universitário do Porto, Portugal.

Methods:

Retrospective review of clinical records of the eyes submitted to PIOLs explantation between 2010 and 2020, in our center. The main outcomes of this study were the indications for explantation and the mean time between implantation and explantation of PIOLs. Secondary outcomes evaluated were the type of lens explanted, the decrease in endothelial cell count after explantation procedure and the need of corneal transplantation at the end of follow-up.

Results:

59 eyes (52 patients) were included, with 86,4% female. All procedures were combined with cataract surgery. The main indications were cataract (66,1%) and endothelial cell loss (33,9%). The mean time until the procedure was 15,16 years, without significant differences by indication (p=0,741). Miopic Artisan ® was the most prevalent lens explanted (61%) followed by ZB5M ® (10,2%) and Nuvita ® (11,9%). Endothelial cell count did not decrease significantly with the explantation procedure (1512,6698 VS 1433,7590; p=0,062). Implantation age correlated negatively with endothelial cell count at the end of follow-up (r=-0,318; p=0,028). Only 6,8% of eyes had indication for corneal transplantation.

Conclusions:

PIOLs implantation is an effective and safety procedure to address high refractive errors. However, these lenses must be explanted at some point in life. Our study demonstrates that, by monitoring endothelial health and cataract formation, these patients are able to maintain ocular integrity in the long term, even after the explantation procedure. In this study implantation age correlated negatively with endothelial cell count at the end of follow-up. We conclude that an older preoperative age could be a risk factor for a shorter survival of this lens.

Financial Disclosure:

None