Author(s): Feghali JG, Kaufman PL. Decreased intraocular pressure in the hypertensive human eye with betaxolol, a beta 1-adrenergic antagonist. Am J Ophthalmol. 1985 Dec 15;100(6):777-82. PMID 2866715
Journal: American Journal Of Ophthalmology, Volume 100, Issue 6, Dec 1985
In a double-masked randomized prospective study, 19 adult white subjects with primary open-angle glaucoma or ocular hypertension were treated twice daily with drops of 0.25% betaxolol (a relatively selective beta 1-adenoceptor antagonist) or placebo for six weeks. The nine betaxolol-treated subjects demonstrated a statistically significant average decrease in intraocular pressure of 3.8 +/- 5 mm Hg, evident after one week and persisting throughout the entire six-week treatment period. The ten placebo-treated subjects exhibited a statistically nonsignificant increase in intraocular pressure of 0.4 +/- 2.4 mm Hg. Mean systemic arterial blood pressure, pulse rate, corneal sensitivity, pupil diameter, and basal tear secretion remained unchanged in both groups. Transient stinging upon instillation of the eyedrops was the only side effect in the betaxolol-treated subjects but in no case did it necessitate cessation of therapy.