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Fig. 3 | BMC Ophthalmology

Fig. 3

From: Segmentation error in spectral domain optical coherence tomography measures of the retinal nerve fibre layer thickness in idiopathic intracranial hypertension

Fig. 3

This figure presents the IR image of the optic nerve head and the cross-sectional peripapillary circle scan for three subjects (ab, cd, ef). The figure demonstrates that in moderate to severe optic nerve head swelling the RNFL boundary as delineated by autosegmentation (blue line) is variable and not accurate. The average RNFL thickness values in these cases will be very inaccurate in these patients. In subject CD the height of the elevation of the optic nerve head is truncated by the image width and hence any values obtained from this scan are inaccurate. All the cases presented in these images were not manually segmented and were excluded from the study

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BMC Ophthalmology

ISSN: 1471-2415

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