Measurement of adherence to brimonidine therapy for glaucoma using electronic monitoring

J. Glaucoma; Purpose: To assess the patient adherence and behavior with brimonidine twice daily (bid) or 3 times daily (tid) in patients used to topical glaucoma medication. Patients and Methods: Seventy-five patients with glaucoma or ocular hypertension were enrolled in a prospective, observational cohort study. Consenting patients were randomly assigned to brimonidine bid or tid and received conventional brimonidine eye drops with attached electronic monitoring devices for 4 weeks. Patients were not explicitly informed on the compliance monitoring. Results: The study was completed by 67 patients (89%). In 65 patients (97%), at least 1 dosing interval exceeded 24 hours. The mean adherence …