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Comparison of measurement error of Cirrus HD-OCT and Heidelberg Retina Tomograph 3 in patients with early glaucomatous visual field defect
Background To compare the measurement error of Cirrus HD-OCT and Heidelberg Retina Tomograph 3 (HRT3) in patients with early glaucomatous visual field defect. Methods Thirty-nine consecutive patients (39 eyes) with early glaucomatous visual field defect were included. One eye of a patient was examin...
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Published in: | Graefe's archive for clinical and experimental ophthalmology 2012-02, Vol.250 (2), p.271-277 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Background
To compare the measurement error of Cirrus HD-OCT and Heidelberg Retina Tomograph 3 (HRT3) in patients with early glaucomatous visual field defect.
Methods
Thirty-nine consecutive patients (39 eyes) with early glaucomatous visual field defect were included. One eye of a patient was examined with Cirrus HD-OCT and HRT3 in one session. Each instrument was used by two operators, each taking two measurements in turn. We performed measurements of average retinal nerve fiber layer (RNFL) thickness and RNFL thickness in four quadrants with Cirrus HD-OCT and 13 stereometric parameters of the optic nerve head and RNFL with HRT3.
Results
Cirrus HD-OCT parameters performed much better than HRT3 stereometric parameters. Mean (for both operators) intraoperator within-subject coefficient of variation of the best Cirrus HD-OCT parameter (average RNFL thickness) was 2.6–2.7 times lower than the best HRT3 parameters [mean cup depth and rim area (
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ISSN: | 0721-832X 1435-702X |
DOI: | 10.1007/s00417-011-1808-4 |