Table 2.

Peripapillary Superficial Vessel Density (Mean ± SD) in 4 Subject Groups

Superficial Vessel Density (%)	AION	Fellow AION	Glaucoma	Normal	AF	AN	GN	AG
Peripapillary small vessels	36.62 ± 7.15	49.38 ± 5.66	39.72 ± 8.18	51.74 ± 2.71	<0.001	<0.001	<0.001	0.164
Peripapillary all vessels	43.99 ± 6.89	56.05± 5.66	46.45 ± 7.78	58.38 ± 2.57	<0.001	<0.001	<0.001	0.420
Superior small vessels	35.93 ± 8.51	48.70 ± 6.29	40.26 ± 8.87	51.81 ± 2.93	<0.001	<0.001	<0.001	0.040
Superior all vessels	43.41 ± 8.03	55.69 ± 6.32	47.22 ± 8.56	58.59 ± 2.77	<0.001	<0.001	<0.001	0.075
Inferior small vessel	37.64 ± 7.73	50.08 ± 5.73	38.80 ± 8.02	51.65 ± 2.89	<0.001	<0.001	<0.001	>0.99
Inferior all vessels	44.65 ± 6.79	55.65 ± 5.46	45.58 ± 7.67	57.99 ± 2.66	<0.001	<0.001	<0.001	>0.99

Comparisons are based on linear mixed model analysis.

AF, comparison between AION (anterior ischemic optic neuropathy) and fellow eye; AG, comparison between AION and glaucoma; AN, comparison between AION and normal subjects; FN, comparison between fellow eye and normal subjects; GN, comparison between glaucoma and normal subjects.