Table 4

Correlation of subscale response with visual acuity Kendall tau-b correlation (p value)

Visual Function Questionnaire ScaleVisual acuity worse-seeing eyeVisual acuity better-seeing eyeVisual acuity affected eyeVisual acuity non-affected eye
Health0.01 (0.927)0.09 (0.508)0.00 (1.000)0.10 (0.452)
Vision0.35 (0.004)−0.14 (0.297)0.39 (0.001)−0.06 (0.622)
Near vision0.37 (0.001)−0.08 (0.504)0.42 (0.000)−0.02 (0.861)
Distance vision0.40 (0.000)−0.10 (0.426)0.39 (0.000)−0.06 (0.605)
Driving0.26 (0.021)−0.16 (0.197)0.27 (0.016)−0.14 (0.234)
Peripheral vision0.29 (0.018)0.10 (0.453)0.31 (0.011)0.14 (0.262)
Colour vision−0.03 (0.832)0.22 (0.108)−0.05 (0.671)0.22 (0.101)
Ocular pain0.27 (0.019)0.05 (0.657)0.29 (0.010)0.06 (0.617)
Role0.30 (0.009)−0.04 (0.756)0.27 (0.018)−0.01 (0.958)
Dependent0.22 (0.071)−0.03 (0.830)0.29 (0.016)0.03 (0.812)
Social functioning−0.06 (0.637)−0.01 (0.930)−0.06 (0.613)0.02 (0.854)
Mental health0.33 (0.003)−0.05 (0.683)0.38 (0.001)0.02 (0.852)
  • The Kendall tau-b is a non-parametric measure of association based on the number of concordances and discordances in paired observations. Concordance occurs when paired observations vary together, and discordance occurs when paired observations vary differently. Bold indicates values that are statistically significant (p < 0.05).