Table 3. Factors associated with pupillary constriction latency in the acute phase.

	ON				NAION
	Univariate analysis		Multivariate analysis 1		Multivariate analysis 2		Univariate analysis
	ß ± SE	P value	ß ± SE	P value	ß ± SE	P value	ß ± SE	P value
VA (LogMAR)	0.029 ± 0.010	0.005					0.08 ± 0.11	0.992
VF MD (dB)	-0.002 ± 0.001	0.005	-0.001 ± 0.001	0.084	-0.001 ± 0.001	0.084	-0.02 ± 0.01	0.369
RNFL mean thickness (μm)	0.001 ± 0.001	0.624					0.00 ± 0.00	0.557
Temporal RNFL thickness (μm)	0.001 ± 0.001	0.741					0.00 ± 0.01	0.631
PMB RNFL thickness (μm)	0.001 ± 0.001	0.859					0.00 ± 0.01	0.557
RG defect	0.015 ± 0.006	0.021					0.001 ± 0.003	0.636
BY defect	0.018 ± 0.007	0.017					0.002 ± 0.003	0.540

BY defect, blue-yellow color vision defect tested by the HRR color vision test; NAION, nonarteritic ischemic optic neuropathy; ON, optic neuritis; PMB, papillomacular bundle; RG defect, red-green color vision defect tested by the HRR color vision test; RNFL, retinal nerve fiber layer; SE, standard errors; T75, Total time from the peak of the constriction to the recovery of the pupil to 75% of maximal pupil diameter; VA, visual acuity; VF MD, visual field mean deviation.

Factors with statistical significance are shown in boldface.