Comparison of two different optical coherence tomography angiography devices in detecting healthy versus glaucomatous eyes – an observational cross-sectional study

Table 4 Comparison of vessel density of optic disc scans between control and glaucoma group using SweptSource

Layers	Age and gender -adjusted vessel density (%)				P-value
	Control (n = 80)		Glaucoma (n = 38)
	Mean ± Standard Error	95% Confidence Interval	Mean ± Standard Error	95% Confidence Interval
Superficial retina
Inferior	0.316 ± 0.018	0.281–0.351	0.273 ± 0.030	0.313–0.432	0.156
Superior	0.241 ± 0.019	0.202–0.279	0.270 ± 0.033	0.204–0.335	0.500
Nasal	0.181 ± 0.016	0.149–0.213	0.251 ± 0.031	0.190–0.312	0.074
Temporal	0.203 ± 0.018	0.167–0.240	0.280 ± 0.031	0.217–0.342	0.066
Mean	0.235 ± 0.015	0.204–0.265	0.294 ± 0.026	0.241–0.346	0.089
Deep retina
Inferior	0.266 ± 0.016	0.234–0.298	0.331 ± 0.026	0.279–0.384	0.065
Superior	0.233 ± 0.018	0.196–0.270	0.261 ± 0.031	0.198–0.323	0.504
Nasal	0.242 ± 0.013	0.215–0.269	0.295 ± 0.026	0.244–0.347	0.105
Temporal	0.213 ± 0.017	0.180–0.246	0.292 ± 0.029	0.234–0.351	0.040
Mean	0.238 ± 0.012	0.214–0.263	0.295 ± 0.022	0.252–0.338	0.048
Choroid
Inferior	0.355 ± 0.016	0.322–0.388	0.479 ± 0.027	0.424–0.533	0.001
Superior	0.339 ± 0.019	0.301–0.378	0.394 ± 0.032	0.330–0.457	0.202
Nasal	0.355 ± 0.018	0.319–0.391	0.426 ± 0.031	0.365–0.487	0.079
Temporal	0.351 ± 0.017	0.318–0.385	0.463 ± 0.028	0.408–0.518	0.003
Mean	0.350 ± 0.015	0.321–0.379	0.440 ± 0.024	0.391–0.489	0.007

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