Comparison of Corneal Collagen Cross-Linking Protocols Measured With Scheimpflug Tomography

Purpose: To evaluate the effectiveness of corneal collagen cross-linking with Dresden and accelerated protocols to treat keratoconus by Scheimpflug tomography. Methods: Fifty-eight eyes with manifest keratoconus were measured preoperatively at least twice with the Pentacam. The difference of relevant variables for keratoconus progression (eg, D value, thinnest pachymetry, Kmax) was established. After evident progression, patients underwent corneal cross-linking (29 eyes with the Dresden protocol and 29 eyes with the accelerated protocol). Postoperatively, variables used for defining manifest progression were compared again by measuring the difference between 2 measurements. Results: Preoperatively, the mean D value was 9.6 ± 4.8 for the Dresden cohort and 8.3 ± 5.1 for the accelerated cohort. There was no significant difference between both cohorts in terms of the mean preoperative difference in the D value (0.59 ± 1.7 for the Dresden cohort vs. 0.4 ± 1.49, P = 1). Postoperatively, however, a significant difference (P
Source: Cornea - Category: Opthalmology Tags: Clinical Science Source Type: research

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