. Author manuscript; available in PMC: 2019 Sep 21.

Published in final edited form as: Am J Ophthalmol. 2018 Jan 9;187:108–116. doi: 10.1016/j.ajo.2017.12.024

TABLE 4.

Clinical, Demographic, and Disc Hemorrhage Features In Normal Tension Glaucoma and High Tension Glaucoma

Clinical and Demographic Features	NTG (N = 28)	HTG (N = 12)	P Value

Age in years, mean (SD)	65.5 (8.9)	67.2 (10.9)	.54^a
Female sex, n (%)	25 (89.3)	7 (58.3)	.039^c
Hypertension, n (%)	9 (32.1)	9 (75.0)	.013^b
Diabetes mellitus, n (%)	2 (7.1)	3 (25.0)	.15^c
Using blood thinning medication, n (%)	9 (32.1)	6 (50.0)	.31^c
LogMAR best-corrected visual acuity, mean (SD)	0.05 (0.1)	0.11 (0.2)	.35^a
Intraocular pressure at time of hemorrhage discovery, in mm Hg, mean (SD)	13.3 (2.4)	16.4 (2.7)	.0022^a
Maximum intraocular pressure in affected eye, in mm Hg, mean (SD) (n = 38)	17.1 (2.3)	24.6 (4.6)	<.0001^a
Cup-to-disc ratio at time of hemorrhage discovery, mean (SD)	0.7 (0.1)	0.8 (0.1)	.0016^a
Mean deviation on reliable visual field closest to time of hemorrhage discovery in affected eye in decibels, mean (SD) (n = 39)	−2.7 (2.2)	−6.0 (3.5)	.0052^a
Hemorrhage descriptors
ΔA (arterial-hemorrhage densitometry), mean (SD), pixel intensity units	7.9 (7.3)	4.4 (7.6)	.27^a
ΔV (venous–hemorrhage densitometry), mean (SD), pixel intensity units	−3.9 (7.9)	−6.4 (8.2)	.42^a
Length-to-width ratio, mean (SD)	5.1 (2.5)	4.6 (2.4)	.61^a

HTG = high tension glaucoma; NTG = normal tension glaucoma.

Mann-Whitney U test.

χ² test.

Fisher exact test.