1. Effect of Optic Disc Tilt on the Measurement of Peripapillary Vessel Density Using Optical Coherence Tomography Angiography

    Effect of Optic Disc Tilt on the Measurement of Peripapillary Vessel Density Using Optical Coherence Tomography Angiography

    Precis: Eyes with tilted disc had significantly lower peripapillary vessel density (pVD) and lower long-term measurement reproducibility in OCTA. After adjusting for confounding factors, disc tilt still contributed to the reduction of pVD in most sectors. Purpose: To investigate the effect of optic disc tilt on the measurement of sectoral peripapillary vessel density (pVD) by optical coherence tomography angiography (OCTA) and on the long-term measurement reproducibility. Methods: This retrospective observational case control study included 70 healthy eyes. Average and eight-sector pVDs and peripapillary retinal nerve fiber layer (pRNFL) thicknesses were obtained from OCTA at two visits at 1-year intervals. The ...

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