Analysis Of Angle Closure After Implantable Collamer Lens (Icl) Implantation
Published 2025 - 43rd Congress of the ESCRS
Reference: PO1051 | Type: Poster | DOI: 10.82333/zzy7-bx39
Authors: Daniel Velázquez Villoria* 1 , Alvaro Velázquez Villoria 1 , Rodrigo Gonzalez Regueiro 2 , Lara Pereira 1 , Silvia Correa 1 , Elena Melo Vazquez 2 , Victoria Da Rocha 1 , Paula Ovelleiro Fortes 2 , M Angeles Perez 1
1CLINICA VILLORIA,VIGO,Spain, 2CLINICA VILLORIA,PONTEVEDRA,Spain
Purpose
Define the mean variation of the iridocorneal angles after ICL implantation and determine which variables may affect a high-risk iridocorneal angle.
Setting
Villoria Oftalmólogos Vigo & Pontevedra. Spain.
Methods
Observational, retrospective study on patients undergoing refractive surgery with phakic ICL implantation. TIA500 was analyzed preoperatively and one month postoperatively in nasal and temporal quadrants using AS-OCT Visante. Postoperative vault and Anterior vault were measured. Correlations between vault, Anterior vault, and pre/postoperative variables were studied. The impact of anterior vault on postoperative angle reduction was assessed. Regression analysis was performed to develop predictive formulas for vault and Anterior vault in the 13.2mm lens group.
Results
One-month post-op, TIA500 decreased by -11.16±7.11º (-28.34±17.48%) nasally and -12.42±7.89º (-31.27±16.98%) temporally. Vault was 530.10±249.86µm, Anterior Vault 2.38±0.32mm. Anterior Vault correlated significantly with White-to-white (WTW), Anterior Chamber Depth (ACD), Angle-to-Angle (ATA), Crystalline Lens Rise (CLR), and TIA500 (p<0.001). Vault correlated with ACD, CLR, compression, and TIA500 (p=0.019). Anterior vault had a significant impact on angle reduction, whereas vault did not. Regression formulas identified ATA, CLR, and compression as key predictive variables.
Conclusions
Anterior vault appears to be much more related than vault to obtaining high-risk postoperative angles. The concept of high vault or hypervault should be redefined and contextualized with the anterior vault value. Furthermore, it becomes critically important to preoperatively identify patients at risk of angular narrowing who present with shallow ACD and/or elevated CLR.