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Updated: Sep 27, 2026
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
Corneal topographic and pachymetric screening of keratorefractive patients
Renato Ambrósio1, Stephen D Klyce, Steven E Wilson
1Department of Ophthalmology, University of Washington, Seattle, WA 98195, USA.
Purpose:
To review the incidence of corneal abnormalities detected in the preoperative examination, using videokeratography and pachymetry that excluded patients from laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK).
Methods:
We conducted a chart review of consecutive patients who had a preoperative examination and were excluded from refractive surgery.
Results:
Eighteen patients from 1,392 refractive candidates (1.3%) were designated as poor candidates for LASIK or PRK based on corneal topography and/or pachymetry. Thirteen patients (0.9%) were identified as having keratoconus suspect, keratoconus, or pellucid marginal degeneration. Five patients (0.4%) were excluded due to thin corneas (<490 microm) despite normal corneal topography.
Conclusions:
Corneal topography and pachymetry are indispensable tools in the preoperative screening of refractive surgery candidates.