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Abstract #26994 Published in IGR 12-4
Correlation between peripapillary retinal nerve fiber layer thickness and optic nerve head parameters using spectral domain optical coherence tomography.
Mansoori T; Viswanath K; Balakrishna NJournal of Glaucoma 2010; 19: 604-608
AIM: To evaluate correlation between peripapillary retinal nerve fiber layer thickness (RNFL) and optic nerve head (ONH) parameters in normal participants using Spectral domain optical coherence tomography (OCT). METHODS: Sixty-five eyes of 65 healthy participants aged 13-79 years underwent ONH analysis and peripapillary RNFL thickness measurements using spectral domain OCT. The RNFL measurements were correlated with the data obtained with ONH analysis. RESULTS: The average and quadrant RNFL thickness did not show correlation with optic disc area. A positive correlation was found between average RNFL thickness and rim area (r=0.425, P=0.000) and negative correlation between average RNFL thickness and cup area (r=-0.249, P<0.046). CONCLUSIONS: In our study, peripapillary RNFL thickness as measured by OCT did not show correlation with optic disc size. Despite a shorter distance between optic disc and circular scan margin, larger discs did not show a thicker RNFL. Interindividual variability of disc area probably minimizes the effect of various ONH size on RNFL thickness measurement.
Department of Glaucoma, Pushpagiri Eye Institute, West Marredpally, Secunderabad
Classification:
6.9.2.2 Posterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)
