Table 1. Visual symptoms (mean and SD).

Predictor		Controls	PD	Z	p
General	Nausea	0.07 (0.25)	0.06 (0.24)	−0.05	0.96
	Spatial confusion	0.00 (0.00)	0.13 (0.34)	−1.39	0.16
	Hallucinations	0.00 (0.00)	0.00 (0.00)	0.00	1.00
Saccade	Vertigo	0.14 (0.51)	0.13 (0.33)	−0.45	0.65
	Spatial shift	0.00 (0.00)	0.13 (0.33)	−1.39	0.16
	Motion	0.07 (0.25)	0.13 (0.33)	−0.57	0.36
Smooth pursuit	Vertigo	0.00 (0.00)	0.00 (0.00)	0.00	1.00
	Spatial shift	0.00 (0.00)	0.00 (0.00)	0.00	1.00
	Motion	0.00 (0.00)	0.00 (0.00)	0.00	1.00
Total		0.03 (0.09)	0.07 (0.11)	−1.13	0.26