Table 2. Group mean (±SD) driving performance outcomes for the two groups.

		Control	Cataract	p-value*
Dual Carriageway	Mean speed (km/h)	113.67 ± 10.49	98.23 ± 14.43	0.014
Mountain Road	SDLP (m)	0.61 ± 0.08	0.74 ± 0.15	0.037
	Distance travelled invading the opposite lane (m)	370.94 ± 185.80	626.84 ± 246.75	0.023
	Total distance travelled outside the lane (m)	436.07 ± 171.38	950.81 ± 494.01	0.006
	Mean speed (km/h)	56.09 ± 2.44	48.98 ± 6.60	0.008
Total Circuit	Total time (s)	694.34 ± 55.60	775.85 ± 93.93	0.030

*independent t-test.

SDLP, standard deviation of the lateral position.