Table 1. Clinical features and parameters of the participants.

Variables	Parkinson disease (n=35)	Control (n=35)	P
Sex (M/F)	16/19	20/15	0.339
Age (years)	61.86±5.46	60.20±6.75	0.263
Duration of PD (years)	3.2±2.0	N/A	–
Hoehn-Yahr stage	2 [1, 2]	N/A	–
1, n (%)	16 (45.7)
2, n (%)	15 (42.9)
3, n (%)	4 (11.4)
BCVA	1.2 [0.8, 1.5]	1.2 [1.0, 1.2]	0.388
IOP	16.85±2.03	16.74±2.82	0.846

PD, Parkinson’s disease; BCVA, best corrected visual acuity; IOP, intraocular pressure; N/A, not available; SD, standard deviation.