Phakic intraocular lens explantation: series of 175 surgeries
João Heitor Marques1, Pedro Manuel Baptista, Ana Carolina Abreu
1From the Ophthalmology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.
Purpose:
To evaluate the indications for pIOL explantation, pIOL survival time, and visual outcomes and access endothelial cell loss (ECL) after explantation.
Setting:
Ophthalmology Department, Centro Hospitalar Universitário do Porto, Portugal.
Design:
Retrospective longitudinal study.
Methods:
A chart review was performed for all consecutive patients who underwent pIOL explantation from January 2010 to December 2019 in a single center.
Results:
This study included 175 eyes of 112 patients (77% women). The mean pIOL survival was 12.9 ± 4.8 (3.7 to 28.6) years, and the mean follow-up period after explantation was 4.1 ± 3.0 (0.3 to 9.9) years. The most frequent causes for explantation were cataract formation (44.0%, n = 77) and ECL (50.3%, n = 88). During the follow-up period after explantation, the mean ECL rate was 2.27 ± 9.32%/year in the cataract group and -2.14 ± 10.24%/year in the ECL group, reflecting a positive change in cell density in the latter. 8 eyes (4.6%) required a corneal transplant during the follow-up. The mean corrected distance visual acuity was 0.17 ± 0.24 logMAR at the last visit.
Conclusions:
This study demonstrated that pIOL explantation, after a mean survival time of 13 years, was a safe procedure. The main causes for explantation were cataract formation and ECL. Most patients showed a sustained improvement in visual acuity and endothelial cell density after pIOL explantation, and yet its timing should be ideal to avoid irreversible complications.
