Table 6.

The correlation between the mean thickness of retinal layers in macular region and blood vessel density and DM duration

Parameters	SVC-VD		DVC-VD		AC-VD		DM duration
	r	p	r	p	r	p	r	p
NFL
Superior	0.232	0.121	0.075	0.620	0.099	0.512	− 0.497	0.000
Nasal	0.305	0.040	0.123	0.415	0.202	0.178	− 0.528	0.000
Temporal	0.118	0.436	− 0.132	0.381	0.255	0.088	− 0.084	0.577
Inferior	0.230	0.125	0.173	0.150	0.279	0.060	− 0.333	0.024
Center	0.347	0.018	0.348	0.018	0.444	0.002	− 0.510	0.000
GCL
Superior	0.011	0.941	0.227	0.130	0.222	0.138	− 0.122	0.420
Nasal	0.113	0.454	0.257	0.085	0.307	0.038	− 0.255	0.088
Temporal	0.091	0.548	0.042	0.783	0.185	0.321	0.110	0.467
Inferior	0.271	0.069	0.278	0.061	0.147	0.329	− 0.404	0.005
Center	0.196	0.192	0.445	0.002	0.310	0.036	− 0.428	0.003
IPL
Superior	0.354	0.016	0.193	0.199	0.165	0.272	− 0.307	0.038
Nasal	0.235	0.115	0.184	0.221	0.243	0.103	− 0.112	0.457
Temporal	0.225	0.133	0.067	0.660	0.043	0.774	− 0.236	0.114
Inferior	0.037	0.806	0.064	0.672	0.186	0.217	− 0.088	0.560
Center	− 0.187	0.212	− 0.110	0.467	− 0.116	0.442	0.443	0.002
INL
Superior	0.107	0.480	0.189	0.208	0.042	0.783	0.112	0.459
Nasal	0.266	0.074	0.288	0.052	0.226	0.131	0.129	0.394
Temporal	− 0.258	0.084	− 0.316	0.033	0.045	0.765	0.360	0.014
Inferior	− 0.073	0.632	− 0.151	0.315	− 0.146	0.334	0.450	0.002
Center	− 0.038	0.802	− 0.068	0.651	0.062	0.682	0.113	0.453

Bold p values indicate a correlation between the two groups, p < 0.05. The statistical results in the table corrected for the variable of age. SVC superficial vascular complex, DVC deep vascular complex, AC avascular complex, DM diabetes mellitus, NFL nerve fiber layer, GCL ganglion cell layers, IPL inner plexiform layer, INL inner nuclear layer; VD vascular density