Corneal Allogenic Intrastromal Ring Segments (Cairs) Implantation For The Treatment Of Keratoconus
Published 2024 - 42nd Congress of the ESCRS
Reference: FP31.12 | Type: Free paper | DOI: 10.82333/wsvx-1457
Authors: Adel Barbara* 1 , Joseph Pickel 2 , Ramez Barbara 3
1BARBARA MEDICAL CENTRE,Haifa,Israel, 2Ophthalmology,Samson Assuta Ashdod University Hospital,Ashdod,Israel, 3BARBARA MEDICAL CENTRE,Haifa,Israel;Hillel Yaffe Medical Centre,Hadera,Israel
Purpose
To present the clinical outcomes of Corneal Allogenic Intrastromal Ring Segments (CAIRS) implantation for the treatment of keratoconus.
Setting
Barbara Medical Centre for Keratoconus and Refractive Surgery.
Methods
A retrospective case series was conducted, involving patients with keratoconus treated with CAIRS for visual improvement. All patients had unsatisfactory visual acuity or quality of vision and/or were contact lens intolerant. Femto laser-assisted CAIRS implantation of KeraNatural (VisionGift – USA) was performed under topical anesthesia. Clinical evaluation included visual acuity assessments, refractive evaluations, and Scheimpflug and OCT corneal tomography.
Results
The study included 26 eyes of 21 patients. The mean age was 37.1 yrs (range: 15 - 64 yrs). Uncorrected distance visual acuity significantly improved from 1.17 ± 0.47 to 0.50 ± 0.30 logMAR (P < 0.001), and corrected distance visual acuity improved from 0.35 ± 0.16 to 0.22 ± 0.177 logMAR (P = 0.0006). The mean manifest refraction spherical equivalent values reduced from -3.38D to -1.74D (P = 0.01). The mean astigmatic power reduced from 9.6D to 3.43D (P < 0.001). The mean flat keratometry, steep keratometry, and K maximum values reduced from 49.01, 54.18, 58.47 to 46.10, 49.71, 54.74, respectively (P < 0.001) at 5-month average follow-up. No intraoperative complications were observed. One patient had deep corneal pannus at 6-month follow-up.
Conclusions
Real-life data demonstrate that CAIRS is a safe and effective treatment for visual rehabilitation in patients suffering from keratoconus who are contact lens intolerant and have unsatisfactory visual acuity with spectacle correction.