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. 2012 Aug 10;26(11):1402–1411. doi: 10.1038/eye.2012.168

Table 3. Correlative analysis—RLVT, clinical measures, and the NEL-VFQ-25 (Spearman's).

The clinical measures of visual function Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 NEI-VFQ-25
VA (logMAR)
 Distance
  Binocular 0.49** 0.55** 0.68** 0.66** 0.60** 0.65** −0.40**
  Better eye 0.50** 0.53** 0.71** 0.67** 0.63** 0.64** −0.37*
  Worse eye 0.21 0.31* 0.25* 0.28* 0.33* 0.33* −0.51**
               
 Near
  Binocular 0.74** 0.68** 0.68** 0.78** 0.60** 0.59** −0.32*
  Better eye 0.70** 0.65** 0.72** 0.78** 0.60** 0.61** −0.32*
  Worse eye 0.26* 0.31* 0.27* 0.39* 0.23 0.29* −0.52**
               
 Intermediate
  Binocular 0.62** 0.65** 0.75** 0.66** 0.60** 0.68** −0.28*
  Better eye 0.56** 0.63** 0.69** 0.61** 0.50** 0.71** −0.29*
  Worse eye 0.31* 0.35* 0.45** 0.42** 0.32* 0.45** −0.43**
 
Stereopsis 0.31* 0.33* 0.26* 0.41** 0.25* 0.29* −0.50**
Color vision 0.43** 0.27* 0.41** 0.36* 0.20 0.34* −0.03
 
CS (log units)
 85 cd/m2
  1.5 cpd −0.60** −0.61** −0.76** −0.65** −0.50** −0.60** 0.23
  3.0 cpd −0.55** −0.56** −0.60** −0.67** −0.51** −0.49** 0.34*
  6.0 cpd −0.49** −0.47** −0.47** −0.63** −0.38* −0.43** 0.48**
  12.0 cpd −0.31* −0.25* −0.24 −0.35* −0.17 −0.30* 0.38*
  18.0 cpd −0.26* −0.19 −0.27* −0.25* −0.12 −0.18 0.33*
 
 3.0 cd/m2
  1.5 cpd −0.48** −0.55** −0.63** −0.54** −0.36* −0.44** 0.17
  3.0 cpd −0.43** −0.43** −0.44** −0.47** −0.32* −0.27* 0.23
  6.0 cpd −0.25* −0.29* −0.36* −0.36* −0.27* −0.27* 0.23
  12.0 cpd −0.35* −0.47** −0.34* −0.52** −0.25* −0.31* 0.41**
  18.0 cpd −0.16 −0.29* −0.19 −0.15 0.04 −0.14 0.23
 
CS with glare (3 cd/m2)
 1.5 cpd −0.45** −0.46** −0.45** −0.36* −0.38* −0.31* 0.23
 3.0 cpd −0.30* −0.29* −0.36* −0.28* −0.23 −0.24 0.31*
 6.0 cpd −0.50** −0.60** −0.52** −0.52** −0.35* −0.41** 0.46**
 12.0 cpd 0.03 0.04 −0.07 −0.18 −0.13 −0.02 0.19
 
NEI-VFQ-25 −0.16 −0.20 −0.27* −0.33* −0.27* −0.28* 1.00

Abbreviations: cpd, cycles per degree; CS, contrast sensitivity; logMAR, logarithm of the minimum angle of resolution; NEL-VFQ-25, 25-item National Eye Institute Visual Functioning Questionnaire; RLVT, real-life vision test; Task 1, reading and Chinese character-picking task; Task 2, reading and Chinese character-picking task in the reduced illumination; Task 3, Fruit and vegetable picking; Task 4, buttons matching; Task 5, street sign/billboard recognition; Task 6, face recognition; VA, visual acuity.

All the correlative results of the 18.0 cpd (contrast sensitivity with glare (3 cd/m2)) were 0, so they were not included in the Spearman's correlation.

*P<0.05 and **P<0.001.