Table 3.

Comfort survey results

Time (seconds)	Baseline	Latanoprost		Travoprost BAK-free
	Mean	Mean	P-value	Mean	P-value
NPCS burning	7.5 ± 15.9	8.4 ± 16.5	0.37	10.5 ± 17.0	0.06
NPCS stinging	0.2 ± 0.8	0.1 ± 0.7	0.18	0.1 ± 0.7	0.18
NPCS foreign body	0.04 ± 0.3	0.02 ± 0.1	0.32	0.02 ± 0.1	0.32
NPCS general discomfort	0.1 ± 1.0	0.02 ± 0.1	0.40	0.02 ± 0.1	0.40
NPCS overall accept	0.5 ± 1.1	0.2 ± 0.7	0.04	0.3 ± 1.1	0.30

Abbreviation: NPCS, Nine Point Comfort Survey.