Table 2

Reliability results for the visual disability assessment

Visual disability assessment indexInterobserver reliabilityTest-retest reliabilityInternal consistency reliability
ρρCronbach’s α
Total visual disability score0.94 0.98 0.93
Mobility visual disability score0.93 0.97 0.92
Distance/lighting/reading visual disability score0.92 0.98 0.89
Near and related tasks visual disability score0.92 0.96 0.80
  • p<0.001 in all cases.