Table 3 VFQ-39 subcategory scores and mean total score stratified by date of examination

General health

66.20

68.80

2.59

0.428

General vision

63.52

70.37

6.85

0.010

Ocular pain

70.83

81.94

11.11

0.013

Near activities

73.21

74.55

1.34

0.607

Distance activities

75.43

81.48

6.05

0.026

VS social functioning

87.35

91.98

4.63

0.100

VS mental health

57.50

69.26

11.76

0.000

VS role difficulties

69.21

76.39

7.18

0.035

VS dependency

79.40

88.19

8.80

0.045

Driving

70.31

74.65

4.34

0.069

Color vision

90.74

95.37

4.63

0.232

Peripheral vision

78.70

83.33

4.63

0.289

Total VFQ score

72.33

79.44

7.11

0.001