Table 1. Demographic characteristics of the population study.

Test	Age groups	Gender (male:female)	N (subjects)	Mean age/SEM (years)	Range
FDT	[20;30[	14∶29	43	24.84/0.43	20–29
	[30;40[	20∶24	44	33.64/0.41	30–38
	[40;50[	7∶13	20	44.30/0.62	40–48
	[50;60[	6∶14	20	54.90/0.69	50–59
	[60;[	16∶15	31	66.23/1.07	60–83
LocSp	[20;30[	8∶12	20	24.50/0.56	20–29
	[30;40[	6∶13	19	34.00/0.66	30–39
	[40;50[	10∶9	19	45.32/0.56	41–49
	[50;60[	8∶11	19	54.37/0.67	50–59
	[60;[	6∶14	20	68.50/1.01	63–77
3D SFM	[20;30[	8∶12	20	24.50/0.56	20–29
	[30;40[	6∶13	19	34.00/0.66	30–39
	[40;50[	10∶10	20	45.45/0.55	41–49
	[50;60[	8∶11	19	54.37/0.67	50–59
	[60;[	6∶14	20	68.50/1.01	63–77
CCT	[20;30[	16∶34	50	23.56/0.34	20–29
	[30;40[	4∶19	23	32.91/0.56	30–38
	[40;50[	4∶16	20	46.20/0.63	41–49
	[50;60[	8∶17	25	55.60/0.59	51–59
	[60;[	7∶10	17	64.94/1.01	60–71
ISF	[20;30[	20∶42	62	24.45/0.32	20–29
	[30;40[	8∶22	30	33.00/0.46	30–39
	[40;50[	13∶10	23	46.30/0.53	41–49
	[50;60[	6∶18	24	54.67/0.65	50–59
	[60;[	9∶17	26	64.81/0.61	61–72

Note. FDT = Frequency Doubling Technology; LocSp = Local Speed Discrimination; 3D SFM = 3D Structure from Motion; CCT = Cambridge Color Test; ISF = Intermediate Spatial Frequency Perimetry; SEM = standard error of the mean.

For each participant, only the dominant eye was performed, except for SFM that was tested binocularly.