1. Longitudinal evaluation of posterior corneal power by anterior segment optical coherence tomography 18 months or more after photorefractive keratectomy

    Longitudinal evaluation of posterior corneal power by anterior segment optical coherence tomography 18 months or more after photorefractive keratectomy

    Purpose: To investigate the change in anterior, posterior, and net corneal power more than 18 months after photorefractive keratectomy (PRK) by RTVue anterior segment optical coherence tomography (OCT). Setting: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. Design: Prospective observational study. Methods: PRK was performed using Technolas TENEO 317 laser platform. Anterior, posterior, and net corneal power was measured by the RTVue-XR anterior segment OCT system with the Pachymetry + Cpwr scan pattern at baseline and 1, 3, 6, 12, 18, and >18 (up to 27) months after PRK. Results: Three hundred and twenty-six eyes of 163 patients (age ...

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