The purpose of this study is to obtain and assay human aqueous samples following pre-operative dosing with 0.1% Brimonidine Purite™ (pH 7.8) or with 0.15% Brimonidine Purite® (pH 7.2) from patients undergoing routine cataract surgery in order to evaluate the aqueous concentration of the two formulations.
The purpose of this study is to obtain and assay human aqueous samples following pre-operative dosing with 0.1% Brimonidine Purite™ (pH 7.8) or with 0.15% Brimonidine Purite® (pH 7.2) from patients undergoing routine cataract surgery in order to evaluate the aqueous concentration of the two formulations.Study hypothesis: The aqueous humor concentration 45 minutes following dosing of 0.1% Brimonidine Purite™ (pH 7.8) is comparable with 0.15% Brimonidine Purite® (pH 7.2)