“The combination of ….5% with epinephrine 0.…% plus guanethidine 3 % had a stronger effect on intraocular pressure (reduction 10.9 +/- 1.1 mm Hg) than epinephrine 0.5% plus guanethidine …% (7.6 +/- 0.9 mm Hg) or timolol alone (5.8 +/- 1.1 mm Hg) or other glaucoma drugs.”