Aim: The authors evaluated their five years experience with 0.005% latanoprost (Xalatan®) glaucoma treatment. They monitored the latanoprost efficiency to lower the intraocular pressure (IOP) and its capability to maintain the target IOP in the long term. Patients and method: The group consisted of 118 patients (231 eyes) who are treated for glaucoma with latanoprost. The follow up period was at least 3 years. The patients were checked each three months and the results of the IOP measurement for the study purpose were included once a year. Results: The IOP before the latanoprost treatment was 23.4 ± 5.3 mm Hg. The IOP after 1-year latanoprost treatment was 17.6 ± 3.2 mm Hg, after 2 years 17.7 ± 3.9 mm Hg, after 3 years 17.1 ± 3.1 mm Hg, after 4 years 17.1 ± 3.2 mm Hg, and after 5 years 17.6 ± 3.8 mm Hg. The average IOP during the latanoprost treatment was 17.4 ± 3.4 mm Hg, the average lowering of the IOP after the start of the latanoprost treatment was by 6.0 mm Hg. The IOP lowering by 30 % against the IOP value at the time of glaucoma diagnose was reached after 3 years in 82 % (189 out of 231) eyes, after 5 years in 83 % Conclusion: Our five years experience confirmed, that latanoptost is a drug significantly lowering and in the long term maintaining the IOP level. As a great advantage, we appreciate the simple application and good compliance. (54 out of 65) eyes.

        Key words: latanoprost, intraocular pressure, uveo-scleral outflow, glaucoma