Effect of Repetitive Imaging on Topographic Measurements of the Optic Nerve Head
作者： Robert N Weinreb , Moshe Lusky , Dirk-Uwe Bartsch , David Morsman
DOI: 10.1001/ARCHOPHT.1993.01090050070031
关键词:
摘要: • Objective. —A confocal scanning diode laser ophthalmoscope was used to determine the number of examinations needed obtain highly reproducible topographic measurements optic nerve head and peripapillary retina. Design. —Topographic images retina were obtained in one randomly selected eye on five separate visits. On each occasion had examinations. For examination, image acquired (a total 25 per eye). Reproducibility calculated as average SD all elements (65536 pixels). Setting. —Glaucoma referral center. Subjects. —Five normal subjects patients with glaucoma. Intervention. imaging Main Outcome Measure. —Number measurements. Results. —In healthy subjects, reproducibility examination visit 35.5 μm; this improved 25.7 μm three 22.5 In older glaucoma, from 40.2 28.5 24.1 examinations, respectively. Conclusion. —We recommend a series provide high optimal efficiency terms time materials used.
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