Table 3

Univariate regression analyses of associations between postoperative BCVA at 3 years and variables

Variable	Univariate linear regression
Variable	Regression coefficient	R²	P values
Preoperative factors
Age (years)	0.009	0.072	0.166
Gender (male 0, female 1)	0.120	0.077	0.153
Preoperative logMAR BCVA	0.314	0.193	0.019
Macular hole size	0.0006	0.209	0.014
Postoperative factors
Time until ELM bridging	0.034	0.457	<0.001
Time until glial cell disappearance	0.006	0.163	0.033
Area of DONFL at 3 years	−0.0163	0.411	0.683
Photoreceptor integrity at 3 years*	−0.119	0.233	0.009

*Photoreceptor integrity was defined as 3=ELM(+)/EZ(+)/CIZ(+), eyes with a reconstructed ELM, EZ and CIZ; 2=ELM(+)/EZ(+)/CIZ(−), eyes with a reconstructed ELM and EZ, but with a disrupted CIZ; 1=ELM(+)/EZ(−)/CIZ(−), eyes with a reconstructed ELM but with a disrupted EZ and CIZ.
BCVA, best-corrected visual acuity; CIZ, cone interdigitation zone; DONFL, dissociated optic nerve fibre layer; ELM, external limiting membrane; EZ, ellipsoid zone; logMAR, logarithm of the minimum angle of resolution.