Table 3. Correlation between structural parameters (macular and retinal nerve fiber layer thickness) and contrast sensitivity vision (CSV) evaluated with Pelli-Robson and CSV-1000E tests in patients with Alzheimer's disease.

	CSV-1000E TEST								Pelli Robson
	6 CPD	P-value	9 CPD	P-value	12 CPD	P-value	18 CPD	P-value	R	P-value
Macular thickness
Fovea	0.043	0.770	0.19	0.900	0.45	0.760	0.14	0.330	−0.02	0.881
Inner superior sector	0.43	0.030	0.35	0.010	0.44	0.020	0.43	0.030	0.45	<0.001*
Inner nasal sector	0.48	0.010	0.37	0.010	0.44	0.020	0.43	0.040	0.48	<0.001*
Inner inferior sector	0.34	0.020	0.28	0.050	0.40	<0.001*	0.38	0.010	0.47	<0.001*
Inner temporal sector	0.42	0.030	0.23	0.110	0.36	0.010	0.44	<0.001*	0.43	<0.001*
Outer superior sector	0.50	<0.001*	0.36	0.010	0.57	<0.001*	0.50	<0.001*	0.65	<0.001*
Outer nasal sector	0.50	<0.001*	0.50	<0.001*	0.49	<0.001*	0.50	<0.001*	0.58	<0.001*
Outer inferior sector	0.17	0.240	0.27	0.050	0.38	<0.001*	0.32	0.030	0.38	<0.001*
Outer temporal sector	0.47	<0.001*	0.22	0.120	0.50	<0.001*	0.39	<0.001*	0.66	<0.001*
Average thickness	0.43	0.090	0.21	0.420	0.56	0.030	0.53	0.050	0.63	<0.001*
Macular volume	0.48	0.050	0.34	0.150	0.30	0.240	0.27	0.320	0.54	0.010
Rnfl thickness
Average	0.41	0.040	0.33	0.020	0.43	<0.001*	0.40	<0.001*	0.46	<0.001*
Superior quadrant	0.31	0.030	0.23	0.040	0.46	<0.001*	0.41	<0.001*	0.46	<0.001*
Nasal quadrant	0.37	0.010*	0.19	0.200	0.20	0.190	0.11	0.440	0.37	0.010*
Inferior quadrant	0.22	0.140	0.11	0.440	0.23	0.120	0.23	0.110	0.22	0.140
Temporal quadrant	0.23	0.110	0.35	0.010*	0.26	0.740	0.35	0.010*	0.12	0.410

Abbreviations: CSV, contrast sensitivity vision; RNFL, retinal nerve fiber layer.

Data in bold correspond to statistically significant correlations (P-value <0.05). Asterisk indicates a significant difference by Pearson’s test after Bonferroni's correction for multiple tests (P≤0.0045 for macular thickness; P≤0.010 for RNFL thickness).