1. Corneal power measurement with Fourier-domain optical coherence tomography

    Corneal power measurement with Fourier-domain optical coherence tomography
    Setting Doheny Eye Institute, Los Angeles, California, USA. Design Cross-sectional study. Methods A Fourier-domain OCT system (RTVue) was used to scan normal eyes, eyes after myopic laser in situ keratomileusis (LASIK), and keratoconic eyes. After the corneal surfaces were delineated, the system calculated anterior and posterior corneal powers by curve fitting over the central 3.0 mm diameter area. Net corneal power was calculated using a thick-lens formula. The repeatability of the calculations was evaluated by the pooled standard deviation of 3 measurements from the same visit. The net corneal power values were compared with standard automated keratometry measurements (IOLMaster ...
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