Keratoconus Progression After Corneal Cross-Linking in Eyes With Preoperative Maximum Keratometry Values of 58 Diopters and Steeper

Cornea
Samuel J KuechlerBeatrice E Frueh

Abstract

To evaluate the effectiveness of cross-linking (CXL) in treating keratoconus eyes with Kmax values ≥58.0 D. Retrospective analysis of outcomes of standard Dresden epi-off CXL in progressive keratoconus with preoperative Kmax ≥58.0 Diopters (D). Inclusion criteria were Kmax ≥58.0 D and minimum follow-up of 1 year. Corneal topography and tomography were performed preoperatively and at 1 and 2 years. Sixty-one eyes of 56 patients with mean age of 24.9 ± 8.6 years (mean ± SD, range 12-57 years) had 1-year follow-up. Fifty of these eyes had 2-year follow-up. The definition of progression was an increase in Kmax of ≥1.0 D over 1 year. Mean Kmax was 63.9 ± 6.1 D (mean ± SD, range 58.2-87.0 D) preoperatively (n = 61) and 62.9 ± 5.9 D (range 54.6-82.5 D) after 1 year. This represented a significant decrease in steepness (P = 0.0029). Mean pachymetry decreased significantly from 433.7 ± 44.8 μm preoperatively to 423.0 ± 41.8 μm (P = 0.001) at 1 year. Progression occurred in 14 of the 61 eyes (23%) at 1 year, and 5 (8.2%) steepened more than 2.0 D. In the group with 2-year follow-up, mean Kmax was 63.0 ± 5.0 D (range 58.2-87 D) before CXL and decreased to 61.5 ± 4.8 D (range 53.6-78.3 D) at 2 years (P = 0.001). Nine of the 50 eyes (18%) s...Continue Reading

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Citations

Nov 3, 2020·European Journal of Ophthalmology·Sandra HoyekJoelle Antoun
Sep 11, 2021·Journal of Refractive Surgery·Ran Matlov KormasBoris Knyazer
Sep 26, 2020·Journal français d'ophtalmologie·S SaadN Bouheraoua
Dec 8, 2021·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·Louisa M BulirschMartina C Herwig-Carl
Dec 17, 2021·Journal of Refractive Surgery·Janine LenkFrederik Raiskup

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