Table 1.

Comparison of demographics and test results between preperimetric primary open-angle glaucoma patients according to presence of parapapillary deep-layer microvasculature dropout

Variables	Eyes with dropout (33 eyes, 33 patients)	Eyes without dropout (61 eyes, 61 patients)	P−value
Age (years)	52.1 ± 16.0	49.3 ± 13.0	0.360*
Gender (male/female)	19/14	32/29	0.636†
Spherical equivalent (D)	−2.4 ± 4.3	−2.9 ± 3.6	0.386‡
Axial length (mm)	25.2 ± 2.0	25.0 ± 1.7	0.585‡
Central corneal thickness (μm)	535.4 ± 26.9	549.1 ± 31.4	0.037*
Self-reported history of diabetes, n (%)	5 (15.2 %)	6 (9.8 %)	0.430†
Self-reported history of hypertension, n (%)	1 (3.0 %)	1 (1.6 %)	0.657†
Diabetes medication, n (%)	5 (15.2 %)	6 (9.8 %)	0.430†
Antihypertensive medication, n (%)	1 (3.0 %)	1 (1.6 %)	0.657†
Number of topical glaucoma medications			0.657†
0	12	29
1	10	12
>1	11	20
Topical medications, n			0.932†
Prostaglandin analogues	10	17
Beta-antagonists	9	20
Carbonic anhydrase inhibitors	11	20
Alpha-1 agonist	3	4
Untreated intraocular pressure (mmHg)	15.9 ± 5.2	16.2 ± 4.4	0.583‡
Intraocular pressure at scan time (mmHg)	13.0 ± 3.3	13.4 ± 2.9	0.454‡
Systolic blood pressure (mmHg)	122.6 ± 13.2	122.8 ±15.1	0.946*
Diastolic blood pressure (mmHg)	73.3 ± 11.6	72.0 ± 8.6	0.712‡
Mean ocular perfusion pressure (mmHg)	46.8 ± 7.9	45.9 ± 6.8	0.526‡

Values are shown in mean ± standard deviation.

Statistically significant values are shown in bold.

^*The comparison was performed by using independent samples t-test.

^†The comparison was performed by using Chi-squared test.

^‡The comparison was performed by using Mann-Whitney test.