Table 1.

Demographics, vision measures and driving exposure for study participants.

	Younger (n=16)	Older (n=16)	P-value*
Demographics#
Age [years]	27 (6.7)	67 (4.9)	<.001
Male [n]	7	8	1
Vision measures#
Visual Acuity without goggles [logMAR]	.02 (0.05)	.06 (0.09)	.03
Visual Acuity with goggles [logMAR]	.62 (0.14)	.58 (0.14)	.73
Contrast Sensitivity without goggles [logCS]	1.78 (0.06)	1.67 (0.11)	.001
Contrast Sensitivity with goggles [logCS]	1.43 (0.08)	1.33 (0.11)	.001
Driving exposure†
Number of days driven in a week	3.5 (.8 – 7)	5 (2.4 – 7)	.97
Average travel distance per week [km]	64 (28 – 209)	89 (46 – 227)	.69

^*P-values are for the difference between older and younger subjects

^#Mean (SD);

^†Median (IQR)