Purpose: This study describes our long-term experience with apraclonid
ine 0.5% in the treatment of chronic glaucoma in clinical practice. Me
thods: A retrospective review was performed of all consecutive patient
s treated with apraclonidine 0.5%, specifically studying the magnitude
of IOP reduction, incidence of allergic reaction, frequency of ineffe
ctiveness, and its additivity to other anti-glaucoma medications. Pati
ents previously treated with this agent or in wham multiple simultaneo
us medication changes were made were excluded. Results: A total of 174
patients were included in this study and followed up to 24 months. Fo
r 38 patients (21%), the drug was found to be ineffective at some poin
t during the study. A similar number of patients developed an allergic
reaction to the medication. Intraocular pressure lowering ranged from
19 to 26% overall, and 22.5 to 29% in those responding to apraclonidi
ne 0.5%. Conclusions: In this study, apraclonidine 0.5% was shown to b
e effective in reducing intraocular pressure, both for short-term situ
ations and for longer periods of treatment, up to 24 months.