Table 2: Overview of outcome of survey questionnaire

Question		Timolol hemihydrate						Timolol in sorbate				p-value
		N		Mean score				N		Mean score
1. Burning/stinging?		64		1.1 ± 1.1				39		2.4 ± 1.4		<0.001
2. Overall tolerability?		64		0.8 ± 0.8				39		1.0 ± 0.9		0.28
3. Overall comfort?		64		0.8 ± 0.8				39		1.1 ± 1.0		0.14
4. Tearing?		64		0.9 ± 1.0				39		1.6 ± 1.6		0.024
5. Light sensitivity?		63		0.5 ± 0.7				38		0.4 ± 0.9		0.75
6. Blurred vision?		64		0.7 ± 1.0				39		0.6 ± 1.0		0.69
7. Disruption of daily activities?		63		0.1 ± 0.3				39		0.2 ± 0.5		0.53
8. How long was disruption?		11		0.2 ± 0.4				7		0.1 ± 0.4		0.84
10. Overall comfort vs other glaucoma medicines?		39		1.5 ± 0.9				26		1.6 ± 1.1		0.94
Question 9
response		Timolol hemihydrate						Timolol maleate in sorbate				Total
1				5						5		10
2				2						0		2
6				2						1		3
Total				9						6		15
p-value**										0.41

*2-tailed p-value, t-test; **Chi-square test