Table 2

Eyes without measurable surface depression at the site of RNFL damage. The RNFL defects were visible in selected single optical section images, but not in the topographic images. See legend of Table 1 for further information

Number	7	8	9	10	11	12
Age	73	60	58	46	60	54
Visual field	30-2	10-2	30-2	Centring	10-2	none
Width (mm)	1.0	0.25	0.72	0.16	0.10	0.18
Depth (μm) (SD)		−5 (5)	−3 (1)	5 (6)	7 (13)	−1 (6)
Ratio	0.86	0.93	0.95	0.95	0.96	0.89

↵Excluded from three dimensional topographic evaluation because of insufficient signal to noise ratio due to media opacities.
↵The localised defect did not extend within 1 mm from the disc edge. It was therefore measured at a distance of 3.0 mm from the disc border.