Table 4.

Multivariate Models of Visual Function and OCT Predictive Factors^*

Factor	Model R2	Improvement χ2P*
Model 1 (ETDRS visual acuity)	0.2217
Thickness of neurosensory retina at FCP (μm)		<0.0001
Total volume of subretinal tissue (mm3)		0.116
Model 2 (contrast sensitivity)	0.2445
Total volume of subretinal tissue (mm3)		<0.0001
No other significant variables
Model 3 (reading ability)	0.2274
Thickness of neurosensory retina at foveal central subfield (μm)		0.0130
Total volume of subretinal tissue (mm3)		<0.0001

FCP, foveal center point.

^*Stepwise regression was used to select the variables that were independently associated with visual acuity.