Table 1. Factor loadings (pearson correlation coefficients) between PCA-derived Visual Perception factors and the individual questions asked.

	Factor 1	Factor 2	Factor 3
Recognises members of close family	0.008	0.016	0.806
Recognises friends	0.109	0.082	0.798
Recognises people from photographs	0.498	−0.052	0.388
Loses objects around house	0.357	0.304	0.031
Difficulty grasping objects	0.017	0.770	0.047
Difficulty distinguishing step from line	0.029	0.761	0.024
Find objects on patterned carpet	0.689	0.125	0.056
Find objects in complex pictures	0.780	0.029	0.045
Misjudges doorways/corridors	0.154	0.481	0.007
Finds way around house	0.047	0.045	0.015
Difficulty seeing things in distance	0.435	0.209	0.019
Find way in new surroundings	0.649	0.014	0.021