Table 3.

Roughness correlations.

	All subjects
	NFL	GCL	IPL	INL	OPL	ONL	IS/OS	OSL	OPR	RPE	Total retina	MMSE	Visual acuity	Age
NFL		0.43	0.49	0.43	0.24	0.50	0.40	0.19	0.19	0.41	0.25	−0.35	−0.45	0.38
GCL	0.42		0.38	0.54	0.49	0.49	0.17	0.16	0.11	0.32	0.35	0.05	−0.26	0.26
IPL	0.59	0.41		0.74	0.54	0.52	0.61	0.35	0.26	0.59	0.31	-0.05	-0.19	0.28
INL	0.49	0.62	0.74		0.48	0.40	0.41	0.15	0.12	0.56	0.55	-0.07	-0.18	0.26
OPL	0.32	0.52	0.60	0.47		0.61	0.34	0.29	0.37	0.26	0.07	0.08	0.07	0.02
ONL	0.48	0.49	0.69	0.34	0.58		0.30	0.32	0.43	0.43	-0.03	0.00	−0.29	0.13
IS/OS	0.63	0.09	0.67	0.39	0.18	0.47		0.29	0.29	0.62	0.31	0.02	-0.24	0.16
OSL	0.24	0.14	0.28	0.06	0.30	0.42	0.13		0.75	0.17	-0.08	0.14	0.08	0.13
OPR	0.27	0.13	0.26	0.03	0.32	0.41	0.24	0.89		0.22	-0.02	0.12	-0.04	0.01
RPE	0.41	0.35	0.58	0.61	0.16	0.36	0.66	−0.12	0.03		0.40	-0.18	−0.35	0.23
Total retina	0.58	0.45	0.51	0.76	0.07	0.04	0.32	−0.09	-0.08	0.56		0.01	0.03	0.17
MMSE	0.08	0.34	0.18	0.13	0.34	0.30	0.17	0.27	0.37	0.04	-0.04		0.34	−0.43
Visual acuity	−0.37	-0.34	-0.28	-0.17	0.10	−0.45	−0.54	-0.01	−0.12	−0.57	-0.13	-0.03		−0.32
Age	0.10	0.22	0.26	0.29	0.00	0.04	−0.03	0.24	0.13	0.01	0.37	0.12	0.09
	Alzheimer’s disease group

Mutual correlations of layer roughness and Alzheimer’s disease-related variables for the whole sample (upper triangular matrix) and for the Alzheimer’s disease group (lower triangular matrix). Statistically significant values appear in boldface or bold italics (p < 0.05). Correlations of the 10 retinal layers with non-retinal variables appear in italics.

NFL  nerve fiber layer, GCL ganglion cell layer, IPL inner plexiform layer, INL inner nuclear layer, OPL outer plexiform layer, ONL outer nuclear layer, IS/OS  inner segment/outer segment layer, OSL outer segment layer, OPR  outer segment PR/RPE complex, RPE retinal pigment epithelium, MMSE Mini-Mental State Examination.