1. Measurement of Optic Disc Cup Surface Depth Using Cirrus HD-OCT

    Measurement of Optic Disc Cup Surface Depth Using Cirrus HD-OCT

    Purpose: To introduce the measurement method of optic disc cup surface depth using spectral-domain optical coherence tomography (SD-OCT) and then evaluate the rates of cup surface depression at three different stages of glaucoma. Methods: We retrospectively identified 52 eyes with preperimetric glaucoma, 56 with mild-or-moderate glaucoma and 50 with severe glaucoma and followed them for at least 48 months. Eyes were imaged using SD-OCT (Cirrus(TM) HD-OCT) at 12-month intervals. The mean cup surface depth was calculated using the following formula: Cup volume/(Disc area x Average cup-to-disc ratio2) - 200 [mu]m. Results: The rates of mean cup surface depression ...

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