Latanoprost 0.005% test formulation is as effective as Xalatan® in patients with ocular hypertension and primary open-angle glaucoma

Eur J Ophthalmol. 2012 Jan-Feb;22(1):19-27. doi: 10.5301/ejo.5000041.


Purpose: To determine if a test formulation of latanoprost 0.005% (Bausch & Lomb) eyedrops reduced intraocular pressure (IOP) as well as Xalatan® (latanoprost 0.005%) in patients with ocular hypertension (OH) or primary open-angle glaucoma (POAG).

Methods: This multicenter, randomized, investigator-masked, parallel-group study allocated 266 patients with OH or POAG in a 1:1 ratio to latanoprost or Xalatan administered once daily for 6 weeks. The primary endpoint was the mean change in 8:00 AM IOP of the study eye from baseline to week 6. Secondary endpoints included mean change in 8:00 AM IOP from baseline to week 2, and in 12:00 noon and 4:00 PM IOP from baseline to week 2 and week 6. The safety and tolerability of both drugs were also assessed.

Results: Both study groups had comparable demographics and baseline characteristics. The mean (SD) change in 8:00 AM IOP from baseline to week 6 was -7.29 (2.61) and -7.54 (2.80) mmHg with latanoprost and Xalatan, respectively. Latanoprost was found noninferior to Xalatan in the primary analysis (mean [SEM] treatment difference, 0.252 [0.504] mmHg; 95% confidence interval [CI] -0.408, 0.913; p = 0.0001; noninferiority margin, 1.5 mmHg) and met the predefined definition of equivalence to Xalatan (95% CI within [-1.5, 1.5 mmHg] margin). The IOP-lowering effects of latanoprost and Xalatan were comparable at all assessed time points. Both study treatments demonstrated a comparable safety and tolerability profile.

Conclusions: Bausch & Lomb latanoprost 0.005% is clinically equivalent to Xalatan for treating OH and POAG as demonstrated through this unique comparative trial.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antihypertensive Agents / administration & dosage*
  • Antihypertensive Agents / adverse effects
  • Blood Pressure
  • Female
  • Glaucoma, Open-Angle / drug therapy*
  • Heart Rate
  • Humans
  • Intraocular Pressure / drug effects*
  • Latanoprost
  • Male
  • Middle Aged
  • Ocular Hypertension / drug therapy
  • Ophthalmic Solutions
  • Prospective Studies
  • Prostaglandins F, Synthetic / administration & dosage*
  • Prostaglandins F, Synthetic / adverse effects
  • Therapeutic Equivalency
  • Tonometry, Ocular
  • Treatment Outcome


  • Antihypertensive Agents
  • Ophthalmic Solutions
  • Prostaglandins F, Synthetic
  • Latanoprost