1. Overestimation of subfoveal choroidal thickness by measurement based on horizontally compressed optical coherence tomography images

    Overestimation of subfoveal choroidal thickness by measurement based on horizontally compressed optical coherence tomography images

    Abstract Purpose  To measure the difference in subfoveal choroidal thickness between 1:1 pixel (horizontally compressed) images and 1:1 micron images in age-related macular degeneration. Methods  This study included 122 eyes from 122 patients diagnosed with age-related macular degeneration. Choroidal thickness was measured using enhanced-depth imaging optical coherence tomography. The measurement line was drawn as a perpendicular line between Bruch’s membrane and the chorio-scleral interface. The thickness was compared between measurements based on a 1:1 pixel image and a 1:1 micron image. Eyes with a straight vertical measurement line and oblique measurement line were classified into ...

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