ESCRS - PP24.09 - Comparing Pentacam Axl And Casia 2 For Pupil Diameter Measurement Post-Icl Implantation: Effects On Ocular Aberrations

Comparing Pentacam Axl And Casia 2 For Pupil Diameter Measurement Post-Icl Implantation: Effects On Ocular Aberrations

Published 2024 - 42nd Congress of the ESCRS

Reference: PP24.09 | Type: Free paper | DOI: 10.82333/7tnk-mg28

Authors: Álvaro Sánchez Ventosa* 1 , Antonio Cano-Ortiz 1 , Maria Dolores Lopez Perez 1 , Marta Villalba Gonzalez 1 , Timoteo Gonzalez Cruces 1 , Elisa Palacin 1 , Jose Carlos Díaz Ramos 1 , Alberto Villarrubia 1

1Hospital Arruzafa,Córdoba,Spain

Purpose

Purpose: To compare the accuracy of different devices on the measurement of pupil diameter following implantation of a phakic Implantable Collamer Lens ICL (EVO-V5, STAAR Surgical) and to assess its influence on optical aberrations.

Setting

The research was conducted in a specialized ophthalmic surgery center, focusing on refractive error corrections using toric EVO ICL lenses.

Methods

In this prospective cross-sectional study, we tracked and documented the preoperative and postoperative pupil diameter using two distinct instruments: the Pentacam AXL wave and the CASIA2. Measurements were taken both before and one month after ICL implantation, specifically under mesopic conditions. Additionally, we recorded ocular aberrations at 3mm and 5mm pupil diameter, both before and after ICL implantation, utilizing the Pentacam AXL. Furthermore, vault measurements were obtained subsequent to ICL implantation. This comprehensive approach allowed for a thorough assessment of changes in pupil diameter and ocular aberrations associated with ICL implantation.

Results

Analyzedn115 eyes(60 participants) with myopic ICL implants. Pre-surgery, Pentacam measured mean pupil size 6.33 ± 1.04 mm, larger than CASIA's 5.91 ± 1.05 (P<0.001). Post-surgery, Pentacam measured 6.26 ± 1.02 mm, larger than CASIA's 4.72 ± 0.86 (P<0.001). Mean differences: Pentacam-CASIA 0.41 ± 0.87 mm pre-surgery, 1.54 ± 0.84 mm post-surgery (CI: [0.25, 0.57] mm and [1.38, 1.70] mm). Pentacam showed no significant pre/post-surgery difference (P = 0.508). CASIA showed significant pre/post-surgery difference: 5.91 ± 1.05 mm versus 4.72 ± 0.86 (P<0.001). Aberrations: At 3mm, no statistically significant differences in HOA RMS or spherical aberration. At 5mm, HOA RMS unchanged, positive spherical aberration decreased post-ICL implantation.

 
 

Conclusions

Implantation of an ICL can lead to alterations in pupil diameter, which are associated with postoperative vault. The ICL V5 model offers commendable optical quality in relation to aberrations.