Background: Keratoconus is a non-inflammatory disease characterized by progressive corneal steepening, which leads to decreased visual acuity secondary to high irregular astigmatism.
Objectives: To compare the one-year outcomes of accelerated vs. standard collagen crosslinking (CXL) in the treatment of keratoconus.
Methods: A database search of patients who underwent CXL from 2009 to 2017 was conducted at the cornea clinic at Sheba Medical Center. Charts of 99 adult patients (124 eyes) were reviewed. All patients were diagnosed with keratoconus. Main outcome measures were change in keratometry, uncorrected visual acuity (UCVA), and best-corrected visual acuity (BCVA.
Results: We evaluated outcomes in two groups: CXL with standard (3 mW/cm2 for 30 minutes) vs. the accelerated (9 mW/cm2 for 10 minutes) protocol. There were no significant differences between the groups with regard to BCVA, UCVA, and mean spherical equivalent (P =0.83, 0.0519, 0.181, respectively). The corneal thickness in the center and thinnest location were higher in the accelerated group than the in the standard group (P = 0.126). Complication rates did not differ between the two groups.
Conclusions: Accelerated and standard CXL are both safe and effective techniques. Accelerated CXL confers the added benefit of being a faster procedure to both patients and surgeons.
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