Table 3

Factor structure of the data. Intercorrelation coefficients of different daily activities on the first four factors that accounted for most of the variance in the patients’ responses

Daily activitiesFactor 1 Outdoor mobilityFactor 2 Glare and lightingFactor 3 Household tasksFactor 4 Personal care
Outdoor mobility in general0.70
Crossing the road0.77
Seeing moving vehicles0.78
Walking outdoors after dark0.75
Ability to see outdoors after dark0.71
Judging distances0.57
Glare in general0.70
Adaptation to different levels of lighting0.75
Bumping into objects0.62
Seeing in periphery0.63
Tripping over objects0.59
Cooking0.79
Housework0.73
Gardening0.63
Dressing0.85
Washing0.83
Colour vision0.82