Anterior Segment Changes After Femtosecond Laser-Assisted Implantation of a 355-Degree Intrastromal Corneal Ring Segment in Advanced Keratoconus

Purpose:
To study anterior segment changes after implantation of a Keraring with a 355-degree arc length in central advanced keratoconus.
Methods:
Thirty eyes of 22 patients with advanced central keratoconus (grade 3) and absent corneal scarring underwent femtosecond laser-assisted (VisuMax) implantation of a Keraring 355-degree arc length intrastromal corneal ring segment (ICRS) with a segment thickness of 300 μm. Comprehensive ocular evaluations were performed preoperatively and postoperatively to assess uncorrected distance visual acuity, corrected distance visual acuity, K1, K2, Kmax, corneal volume, anterior chamber depth, corneal elevations, and actual segment position 6 months after the procedure.
Results:
Corrected distance visual acuity in decimal notation improved significantly from 0.22 ± 0.17 to 0.49 ± 0.22 (P

Source: Cornea - October 6, 2018 Category: Opthalmology Tags: Clinical Science Source Type: research