CLINICAL OUTCOMES OF FEMTOSECOND LASER-ASSISTED CORNEAL ALLOGENIC INTRASTROMAL RING SEGMENT (CAIRS) IN THE TREATMENT OF KERATOCONUS
Published 2025 - 29th ESCRS Winter Meeting
Reference: PO100 | Type: Free Paper | DOI: 10.82333/wqbb-3898
Authors: Valentina Berrios Dolz 1 , Carlos Rocha-de-Lossada* 2 , José-María Sánchez-González 3 , Soosan Jacob 4
1Córnea,Clínica Oftalmológica Providencia,SANTIAGO,Chile, 2Ophthalmology Department, VITHAS Malaga, 29016 ,Malaga,Spain;Regional University Hospital of Malaga, Hospital Civil Square, 29009 ,Malaga,Spain;Qvision, Ophthalmology Department, VITHAS Almeria Hospital, 04120 ,Almeria,Spain;Surgery Department, Ophthalmology Area, University of Seville, Doctor Fedriani, 41009 ,Seville,Spain, 3Department of Physics of Condensed Matter, Optics Area, University of Seville, 41012 ,Seville,Spain, 4Agarwal’s Group of Eye Hospitals,Chennai,India
Purpose
To describe the outcomes of one year follow-up for the treatment of keratoconus using corneal allogenic intrastromal ring segments (CAIRS).
Setting
The surgery was performed in the operating room of the Providencia Ophthalmological Clinic by the same surgeon (V.B) and the topographic examination was performed in the medical technology room in the same center.
Methods
A retrospective interventional case series of patients with pericentral/ paracentral decentered cones was conducted. CAIRS trephined from donor cornea using a double-bladed trephine were implanted into mid-depth femtosecond laser–dissected channels in the cornea of patients with keratoconus. Tomographic Pentacam using device and visual acuity in decimal were recorded.
Results
In total, forty eyes with at least 1-year follow-up were included. Significant improvement was seen in mean uncorrected distance visual acuity (mean 0.17 SD 0.82 pre to mean 0.32 SD 0.11 post in decimal), spectacle-corrected distance visual acuity (mean 0.32 SD 0.11 pre to mean 0.53 SD 0.10 post in decimal), K1 (mean 46.78D SD 2.4D pre to mean 42.84D SD 3.0D post), K2 (mean 53.32D SD 3.3D pre to mean 47.66D SD 3.12D post), Kmax (mean 54.52D SD 3.4D pre to mean 49.74D SD 3.2D post), thinnest corneal thickness (mean 451.12 µm SD 29.02 µm to mean 481.97µm SD 19.5 µm post), topographic (mean -6.54D SD 2.42D pre to mean -4.73D SD 2.3D post) and refractive astigmatism (mean -4.93D SD 1.87D pre to mean -3.33D SD 1.41D post. All variables showed p<0.001. All segments remained well positioned and no segment-induced complications were seen. No other major intraoperative or postoperative complications were observed.
Conclusion
This pilot study indicates that CAIRS may be a safe, and effective option for treating keratoconus. Further studies are recommended to determine long-term outcomes.