Table 4

Correlation between macular and GCL structural measurements and colour vision evaluated with Lanthony colour test in patients with Parkinson's disease

	Lanthony colour test
	C-index	p Value	CCI	p Value	S-index	p Value
Macular thickness
Central	−0.019	0.905	−0.059	0.716	−0.017	0.915
Inner superior	−0.146	0.369	−0.119	0.463	−0.167	0.302
Inner nasal	−0.055	0.735	−0.044	0.788	−0.040	0.807
Inner inferior	−0.073	0.654	−0.064	0.697	−0.074	0.649
Inner temporal	−0.049	0.764	−0.031	0.850	−0.126	0.439
Outer superior	−0.377	0.017	−0.380	0.015	−0.271	0.090
Outer nasal	−0.341	0.031	−0.323	0.042	−0.310	0.051
Outer inferior	−0.360	0.022	−0.353	0.025	−0.375	0.017
Outer temporal	−0.360	0.023	−0.361	0.022	−0.350	0.027
Macular average	−0.691	0.019	−0.657	0.028	−0.709	0.015
Macular volume	−0.686	0.020	−0.647	0.032	−0.709	0.015
GCL thickness
Superior	−0.380	0.015	−0.369	0.019	−0.287	0.072
Superonasal	−0.383	0.015	−0.337	0.033	−0.350	0.027
Inferonasal	−0.338	0.033	−0.313	0.049	−0.268	0.094
Inferior	−0.341	0.031	−0.311	0.051	−0.282	0.078
Inferotemporal	−0.252	0.116	−0.263	0.101	−0.203	0.208
Temporal	−0.403	0.010	−0.437	0.005	−0.314	0.048
Average IPL+GCL	−0.381	0.015	−0.358	0.023	−0.319	0.045
Minimum IPL+GCL	−0.338	0.033	−0.326	0.040	−0.290	0.069

Data in bold type correspond to statistically significant correlations (p<0.05). CCI, colour confusion index; C-index, confusion index; GCL, ganglion cell layer; IPL, inner plexiform layer; S-index, scatter index.