Table.

Mean evaporative rates following single drop applications of two test agents

Humidity	Baseline *†	30 minutes *†	60 minutes *†
35–45%
Saline	0.0624±0.0312	0.0603±0.0248	0.0675±0.0381
HP-Guar	0.0631±0.0332	0.0568±0.0330	0.0585±0.0255
25–35%
Saline	0.0856±0.0374	0.0822±0.0299	0.0922±0.0498
HP-Guar	0.0873±0.0384	0.0758±0.0435	0.0815±0.0372

35–45% humidity	Baseline vs. 30 min	Saline: ↓ 3.3% (p = 0.357)	HP-Guar: ↓ 10% (p = 0.028)
	Baseline vs. 60 min	Saline: ↑ 8.2% (p = 0.235)	HP-Guar: ↓ 7.3% (p = 0.192)
25–35% humidity	Baseline vs. 30 min	Saline: ↓ 3.9% (p = 0.333)	HP-Guar: ↓ 13.2% (p = 0.023)
	Baseline vs. 60 min	Saline: ↑ 7.7% (p = 0.241)	HP-Guar: ↓ 6.6% (p = 0.178)
%Changes = 100%(Rate at Post-instillation − Rate at Baseline)/Rate at Baseline

^*Values expressed as mean ± SD

^†Units: μl/cm²/min