1. Optic Disc Imaging with Spectral-Domain Optical Coherence Tomography: Variability and Agreement Study with Heidelberg Retinal Tomograph

    Optic Disc Imaging with Spectral-Domain Optical Coherence Tomography: Variability and Agreement Study with Heidelberg Retinal Tomograph

    Objective To evaluate the agreement of optic disc measurements obtained with the Cirrus high-density optical coherence tomography (HD-OCT) and the Heidelberg retina tomograph (HRT) and compare the intervisit, test–retest variability between the instruments. Design Prospective, cross-sectional study. Participants Two hundred seven subjects (109 glaucoma and 98 normal subjects). Methods One eye from each individual was selected randomly for optic disc imaging by the Cirrus HD-OCT and the HRT. Areas of the optic disc and the cup, cup volume, vertical cup-to-disc ratio and cup-to-disc area ratio were compared between the instruments. The OCT measurements were corrected for ocular magnification using ...

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