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Abstract #11533 Published in IGR 6-3
Comparison of optical coherence tomography and scanning laser polarimetry (GDx VCC) for mesuring retinal nerve fiber layer
Hida T; Iwao K; Sato S; Iwakiri R; Kobayashi K; Kobayashi-HJapanese Journal of Clinical Ophthalmology 2004; 58: 1837-1842
We measured the thickness of the retinal nerve fiber layer (RNFL). We used an optical coherence tomography (OCT 3000) and a scanning laser polarimetry with variable corneal compensator (GDxVCC). The RNFL thickness was measured around the optic disc in 52 eyes of 26 healthy volunteers and 31 eyes of 16 glaucoma patients. In healthy eyes, the values averaged 97.3 μm by OCT and 56.78 μm by GDx. In glaucomatous eyes, the values averaged 64.2 μm by OCT and 44.82 μm by GDx. For all parameters, OCT showed significantly higher values for RNFL thickness than GDx. Coefficients of variation for the total average in healthy and glaucomatous eyes were 5.5% and 9.4% with OCT and 2.8% and 3.7% with GDx. Measurement by GDx showed a significantly better reproducibility than OCT. LA: Japanese
Dr. T. Hida, Department of Ophthalmology, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
Classification:
6.9.1 Laser scanning (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)
6.9.2 Optical coherence tomography (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)