title: A randomised crossover study comparing bimatoprost and latanoprost in subjects with primary angle closure glaucoma.
abstract: OBJECTIVE
  To compare the intraocular pressure (IOP) lowering efficacy and side effects of latanoprost 0.005% and bimatoprost 0.03% in subjects with chronic primary angle closure glaucoma (PACG).
  
  
  METHODS
  This was an observer-masked randomised crossover study of 60 PACG subjects who received either latanoprost or bimatoprost for 6 weeks, after which they were crossed over to the other medication for another 6 weeks. The IOP-reducing effect of the medications was assessed by the reduction in IOP after 6 weeks of treatment compared with baseline.
  
  
  RESULTS
  Fifty-four subjects (80 eyes) completed the study. Latanoprost reduced IOP (mean (SD)) by 8.4 (3.8) mm Hg and bimatoprost by 8.9 (3.9) mm Hg from a baseline of 25.2 (3.6) mm Hg and 25.2 (3.6) mm Hg respectively (p = 0.23). Adverse events were mild in both groups; however there were twice as many reports of an adverse event in the bimatoprost group (81%) compared with the latanoprost group (40%, p<0.01). Ocular irritation was the most frequently reported adverse event in both groups; 22 subjects (37.9%) treated with bimatoprost experienced ocular hyperaemia as compared with 13 subjects (22.4%) treated with latanoprost (p = 0.11).
  
  
  CONCLUSIONS
  Bimatoprost once daily was similarly effective in reducing IOP compared with latanoprost once daily in subjects with chronic PACG. Both drugs were well tolerated with mild ocular adverse events.
authors.affiliation: Singapore National Eye Centre, Singapore.
authors.forename: A C S
authors.initials: AC
authors.lastname: How
authors.forename: R S
authors.initials: RS
authors.lastname: Kumar
authors.forename: Y-M
authors.initials: YM
authors.lastname: Chen
authors.forename: D H
authors.initials: DH
authors.lastname: Su
authors.forename: H
authors.initials: H
authors.lastname: Gao
authors.forename: F T
authors.initials: FT
authors.lastname: Oen
authors.forename: C-L
authors.initials: CL
authors.lastname: Ho
authors.forename: S K
authors.initials: SK
authors.lastname: Seah
authors.forename: T
authors.initials: T
authors.lastname: Aung