Noncompliance with glaucoma medication in Korean patients: a multicenter qualitative study.

PURPOSE: To investigate the common side effects of topical antiglaucoma medication, factors affecting compliance, and the utilization of herbal medicine for glaucoma treatment in South Korea. PATIENTS AND METHODS: A cross-sectional multicenter hospital-based study. In-depth interviews using a structured questionnaire were conducted with 581 individuals diagnosed with glaucoma. Additional eligibility requirements were: all participants were diagnosed with glaucoma in one or both eyes and prescribed eye drops at least one month before the start of the study, and were in a suitable condition for an interview. The frequency of response for each category in the interview questionnaire was analyzed. RESULTS: Conjunctival injection, a stinging sensation, and blurred vision were the most frequently reported side effects, among which blurred vision was the most unbearable. Patient knowledge of glaucoma was the only factor associated with the patient's self-evaluation of compliance. Forgetfulness was the most common reason for nonadherence. Only 2.9 % of patients were taking herbal medicine. CONCLUSIONS: Physicians should address a patient's complaint of blurred vision resulting from medication. Complete initial explanation of the consequences of nonadherence and of the potential vision loss from glaucoma are critical elements in improving patient adherence in Asian populations.