Table 4.

Visual field abnormalities in absence of and after one optic neuritis episode

Number of optic neuritis episodes	0			1
	NMO (n = 10 eyes)	MS (n = 30 eyes)	P-value	NMO (n = 33 eyes)	MS (n = 19 eyes)	P-value
Foveal threshold	34 ± 1.8	32.5 ± 3.1	0.07	16.2 ± 15.2	27.4 ± 10.4	0.01
I. Neurologic abnormalities	0	1 (3.3%)	0.9	7 (21.3%)	3 (15.8%)	0.9
I.1. Vertical step	0	0	–	0	0	–
I.2. Quadrant	0	0	–	3 (9%)	0	0.4
I.3. Partial hemianopia	0	0	–	1 (3%)	0	0.9
I.4. Hemianopia	0	0	–	1 (3%)	0	0.9
I.5. Three quadrant	0	1 (3.3%)	0.9	2 (6%)	3 (15.8%)	0.5
II.1. Nerve fiber bundle abnormalities	3 (30%)	8 (26.7%)	0.9	9 (27.3%)	4 (21%)	0.9
II.1.a. Temporal wedge	0	0	–	0	0	–
II.1.b. Enlarged blind spot	0	0	–	0	1 (5.3%)	0.9
II.1.c. Nasal step	0	3 (10%)	0.7	1 (3%)	0	0.9
II.1.d. Paracentral	3 (30%)	4 (13.3%)	0.4	3 (9%)	0	0.4
II.1.e. Partial arcuate	0	0	–	0	1 (5.3%)	0.9
II.1.f. Arcuate	0	1 (3.3%)	0.9	1 (3%)	2 (10.5%)	0.6
II.1.g. Altidudinal	0	0	–	4 (12.1%)	0	0.3
II.2. Diffuse abnormalities	2 (20%)	9 (30%)	0.8	2 (6%)	8 (42.1%)	0.005
II.2.a. Multiple foci	2 (20%)	4 (13.3%)	0.9	0	2 (10.5%)	0.2
II.2.b. Widespread	0	5 (16.6%)	0.4	2 (6%)	6 (31.6%)	0.04
II.3. Central abnormalities	0	2 (6.7%)	0.9	0	2 (10.5%)	0.2
II.3.a. Centrocecal	0	0	–	0	1 (5.3%)	0.9
II.3.b. Central	0	2 (6.7%)	0.9	0	1 (5.3%)	0.9
II.4.a. Total loss of vision	0	0	–	13 (39.4%)	1 (5.3%)	0.01
Artifactual abnormalities	0	0	–	0	0	–
Normal	5 (50%)	10 (33.3%)	0.5	2 (6%)	1 (5.3%)	0.9

Abbreviations: MS, multiple sclerosis; NMO, neuromyelitis optica.