Table 2.

Characteristics of the Participants

Category	All Participants (n = 16)	Current Drivers (n = 10)	NonCurrent Drivers (n = 6)	P Value for Between-Group Difference*
Age, y, median (IQR)	52.5 (35–65)	55.5 (47–66)	52 (19–65)	0.63
Male, n (%)	8 (50)	5 (50)	3 (50)	1.00
VA of telescope eye without bioptic telescope, logMAR, median (IQR)	0.70 (0.60–0.80)	0.70 (0.60–0.80)	0.71 (0.30–0.90)	1.00
VA of telescope eye with bioptic telescope, logMAR, median (IQR)	0.26 (0.10–0.40)	0.35 (0.20–0.40)	0.15 (0.00–0.20)	0.02
VA of fellow eye, logMAR, median (IQR)	0.80 (0.70–1.00)	0.75 (0.70–0.80)	0.91 (0.80–1.00)	0.31
Number of years using bioptic telescope, median (IQR)	19.5 (1–26)	23 (19–36)	1 (1–1)	0.001
Number of participants using bioptic telescope every day, n (%)	10 (63)	8 (80)	2 (33)	0.03
Number of participants reporting bioptic telescope is very helpful, n (%)	12 (75)	8 (80)	4 (67)	0.43

^*Difference between current and noncurrent drivers; significant differences are shown in bold.