Table 3

Pearson's product moment correlation coefficients between measures of vision in better and worse eyes

	Distance visual acuity	Near visual acuity	Reading index
Better eye
Near visual acuity	0.79
Reading index	0.73	0.62
Contrast sensitivity	0.76	0.72	0.67
Worse eye
Near visual acuity	0.53
Reading index	0.36	0.32
Contrast sensitivity	0.50	0.59	0.59