1. Corneal thickness and elevation measurements using swept source optical coherence tomography and slit scanning topography in normal and keratoconic eyes

    Corneal thickness and elevation measurements using swept source optical coherence tomography and slit scanning topography in normal and keratoconic eyes

    Background Optical coherence tomography is being used increasingly for corneal measurements. The current study compared corneal thickness and corneal elevation using SS-OCT (Casia, Tomey, Nagoya, Japan) and slit scanning topography (Orbscan IIz, Bausch & Lomb, Rochester, New York). Design Prospective study Participants 41 normal and 46 keratoconus subjects Methods All eyes were imaged using SS-OCT and slit scanning tomography during the same visit. Mean central (CCT) and thinnest (TCT) corneal thickness and best-fit sphere (BFS) measurements were compared between the instruments. Corneal thickness was also measured with ultrasound pachymetry (USP). Main outcome measures Agreement of measurements between SS-OCT and scanning slit ...

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