Table 2

Scores for each subscale and total scale of the comprehension questionnaire, HADS and NEI VFQ-25 in all subjects

SubscaleNMeanSDRangeRank
Comprehension questionnaire
 Knowledge of glaucoma5007.303.270–122
 Compliance5009.212.102–121
 Habits5004.791.480–73
 Total comprehension50021.305.786–31
HADS questionnaire
 HADS-A5006.123.640–182
 HADS-D5007.294.180–181
 HADS50013.416.590–32
NEI VFQ-25 questionnaire
 General health50066.5815.480–1007
 General vision50052.4118.800–10011
 Ocular pain50066.5818.5912.5–1007
 Near activity50070.8026.570–1005
 Distance activity50072.4026.150–1004
 Social function50086.7519.820–1002
 Mental health50064.4619.976.25–1009
 Role difficulties50054.6325.000–10010
 Dependency50068.9524.780–1006
 Driving15020.0134.460–10012
 Colour vision50087.6022.960–1001
 Peripheral vision50084.5519.830–1003
 Composite score50070.6015.3816.40–97.16
  • HADS, Hospital Anxiety and Depression Scale; HADS-A, Hospital Anxiety and Depression Scale-Anxiety; HADS-D, Hospital Anxiety and Depression Scale-Depression; NEI VFQ-25, 25-item National Eye Institute Visual Function Questionnaire.