Comparative study of central corneal thickness using Fourier-domain optical coherence tomography versus ultrasound pachymetry in primary open-angle glaucoma.

Purpose: To compare central corneal thickness (CCT) results measured by Fourier-domain optical coherence tomography (FD-OCT) and ultrasound pachymetry (USP) in glaucomatous eyes.

Methods: In this prospective, observational cross-sectional study, 80 eyes of 80 patients with primary open-angle glaucoma (POAG) and no other ocular abnormality were selected: 28 were treated with 1 drug (subgroup 1), 32 with 2 drugs (subgroup 2), and 20 with 3 drugs (subgroup 3). CCT was measured by FD-OCT (RTVue OCT) and USP (Pachymeter Reichert IOPac).