Visual And Refractive Outcome After Toric Implantable Collamer Lens Implantation In Keratoconus Patients With A Previous Surgery
Published 2023 - 41st Congress of the ESCRS
Reference: PP11.16 | DOI: 10.82333/hyb1-0a62
Authors: Luis Izquierdo* 1 , Claudia Pomatanta 1 , Anastasia Zienkiewicz 2 , Rolando Rojas 1 , Jose Chauca 3 , Maria A. Henriquez 1
1Research Department,Oftalmosalud Institute of Eyes,Lima,Peru, 2Department of cornea and anterior segment,Oftalmosalud Institute of Eyes,Lima,Peru, 3Department of Statistics, Demography, Humanities and Social Sciences,Universidad Cayetano Heredia, Lima,Lima,Peru
To evaluate the visual and refractive outcome after toric implantable collamer lens (T-ICL) in keratoconus patients having previous surgery
Research Department at Ofttalmosalud, Instituto de Ojos, Lima, Peru.
It is a retrospective cohort study that included 24 eyes with keratoconus of 19 patients, who underwent T- ICL after previous surgery such as cross-linking, intracorneal rings, or Trans-PRK, at the Oftalmosalud Eye Institute, Lima, Peru, between October 2020 to December 2021. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), spherical and cylindrical refraction, and flat and steeper keratometry (K1, K2), were evaluated pre and postoperatively at 1 and 6 months. The double-angle graph was used to visualize the magnitude and axis of average astigmatism (centroid) and the confidence ellipse. Statistical analysis was performed with R software. Complications and quality of life were also recorded
Mean patient age was 32.5 ± 7.6 years. 29% (7/24), 13% (3/24), 58% (14/24) had ICRS, trans-PRK and CXL before de TICL implantation. Median time before the first surgery and the TICL implantation was 25 (QR 4 – 108) months. The mean UDVA pre-TICL was 0.93 ± 0.55 LogMAR and post-TICL was 0.25 ± 0.19 LogMAR (p<0.0001). Spherical equivalent decrease 4.00 ± 2.39 diopters (D) at 1 month postoperative. The pre-TICL centroid was 1.49 ± 4.79 D with an absolute mean of 4.56 ± 1.84 D, while the post-TICL centroid was 0.16 ± 1.79 D with an absolute mean of 1.38 ± 1.09 D (p < 0.001). There were no complications related to the procedure.
Toric ICL implantation was found to be effective for the correction of myopic astigmatism in patients with stable keratoconus and previous surgery, as revealed by the statistically significant improvement in visual and refractive outcomes