Changes On Anterior Chamber Angle Morphology After Phakic Implantable Collamer Lens Implantation
Published 2024 - 42nd Congress of the ESCRS
Reference: PO1193 | Type: Poster | DOI: 10.82333/e6fh-8660
Authors: Daniel Velázquez Villoria* 1 , Alvaro Velazquez Villoria 1 , Rodrigo Gonzalez Regueiro 1 , Elena Melo Vazquez 1 , Silvia Correa 1 , Lara Pereira 2 , Paula Ovelleiro Fortes 1
1CLINICA VILLORIA,PONTEVEDRA,Spain, 2CLINICA VILLORIA,VIGO,Spain
Purpose
To analyse iridocorneal angle changes produced after 12 months of phakic implantable collamer lens (ICL) placement by Anterior-Segment optical coherence tomography (AS-OCT)
Setting
Data was obtained from patients undergoing refractive surgery with ICL implantation at Clinica Vista Villoria (Pontevedra, Spain) between 2018 and 2022.
Methods
Retrospective analysis of the pseudo-anonymized data from patients undergoing refractive surgery with ICL implantation for myopia or hyperopia correction at Clinica Vista Villoria, with a minimum follow-up of 12 months. Anterior chamber angle morphology (ACA) was assessed using anterior segment optical coherence tomography (AS-OCT) and optical tomography. ACA morphology was characterized pre- and postoperatively at 1 month, 6 months and 12 months through trabecular iris angle (TIA500) and ACA distance opening (AOD500) in both the nasal and temporal side.
Only one eye of each operated subject was selected randomly and included in this study
Results
37 eyes from 37 patients were included in the analysis.
One month after surgery TIA 500 decreased by 10-11º both in the nasal and temporal side; AOD 500 decreased by 0,27mm in the nasal side and 0,34 in the temporal side. No significant changes were observed in TIA 500 or AOD 500 after the surgery. Preoperative TIA 500 correlated with cristaline lens rise (CLR) (Pearson R= -0,430; p=0,007), and TIA 500 decrease 1 month post-op (Pearson R=-0,707; p<0,001). Preoperative AOD 500 also correlated with AOD500 decrease 1 month after the surgery (Pearson R=-0,837; p<0,001). Linear regression analysis showed AOD-500 decrease after ICL implantation was related to preoperative AOD, CLR, ICL Size and anterior chamber width (ACW) (R2=0,66; p<0,001).
Conclusions
Anterior chamber angle changes were detected at 1 month after ICL implantation, although measurements remained stable at 12 months. Patients with wider ACA measurements preoperatively showed greater reductions after surgery.