title: Conjunctival hyperemia in healthy subjects after short-term dosing with latanoprost, bimatoprost, and travoprost.
abstract: OBJECTIVE
  To evaluate conjunctival hyperemia after short-term use of latanoprost 0.005%, bimatoprost 0.03% and travoprost 0.004% in normal adults.
  
  
  METHODS
  Prospective, randomized, double-masked crossover active controlled comparison.
  
  
  METHODS
  We evaluated conjunctival hyperemia by a standard photographic measure at the slit lamp and by anterior segment photographs in healthy subjects after dosing for 5 days with latanoprost, bimatoprost, or travoprost. Conjunctival hyperemia was evaluated at 24-hour trough (hour 0) and at hour 1 after dosing. Each subject was crossed over between periods after a 1-week washout interval.
  
  
  RESULTS
  Twenty-eight subjects (mean age 26 +/- 9 years) completed this study. Several comparisons were noted to be significant between groups by slit-lamp biomicroscopy: first, at hour 0 latanoprost had significantly less hyperemia than bimatoprost; second, at hour 0 latanoprost showed significantly less change than bimatoprost compared with the study baseline (visit 2); third, at hour 1 latanoprost had significantly less hyperemia than travoprost; fourth, at hour 1 latanoprost demonstrated significantly less change from baseline in hyperemia than travoprost (visit 2); fifth, at hour 1 latanoprost had less change in hyperemia than bimatoprost or travoprost between the study and the nonstudy eye (P = .03); and last, at hour 1 latanoprost showed significantly less change than bimatoprost and travoprost compared with hour 0 (P = .04). Additionally, similar grades were observed by photographs with latanoprost demonstrating the lowest levels of hyperemia. Subjects complained less about other people noticing their red eye with latanoprost than bimatoprost or travoprost (P = .048). No serious adverse events were noted.
  
  
  CONCLUSIONS
  This study suggests that latanoprost may cause significantly less short-term conjunctival hyperemia on average than bimatoprost or travoprost in healthy subjects.
authors.affiliation: Pharmaceutical Research Corporation, Charleston, South Carolina 29412-2464, USA. pr_admin@bellsouth.net
authors.forename: William C
authors.initials: WC
authors.lastname: Stewart
authors.forename: Allan E
authors.initials: AE
authors.lastname: Kolker
authors.forename: Jeanette A
authors.initials: JA
authors.lastname: Stewart
authors.forename: Jessica
authors.initials: J
authors.lastname: Leech
authors.forename: Angi L
authors.initials: AL
authors.lastname: Jackson
mesh_terms: D000328:Adult; D000577:Amides; D000959:Antihypertensive Agents / Q000008:administration & dosage / Q000009:adverse effects*; D000069580:Bimatoprost; D003008:Cloprostenol / Q000008:administration & dosage / Q000009:adverse effects* / Q000031:analogs & derivatives*; D003228:Conjunctiva / Q000098:blood supply / Q000187:drug effects; D003229:Conjunctival Diseases / Q000139:chemically induced* / Q000503:physiopathology; D018592:Cross-Over Studies; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006940:Hyperemia / Q000139:chemically induced* / Q000503:physiopathology; D007429:Intraocular Pressure / Q000187:drug effects; D000077338:Latanoprost; D008055:Lipids / Q000008:administration & dosage / Q000009:adverse effects*; D008297:Male; D011446:Prospective Studies; D011461:Prostaglandins F, Synthetic / Q000008:administration & dosage / Q000009:adverse effects*; D013997:Time Factors; D000069557:Travoprost
chemical_list: D000577:Amides; D000959:Antihypertensive Agents; D008055:Lipids; D011461:Prostaglandins F, Synthetic; D003008:Cloprostenol; D000077338:Latanoprost; D000069580:Bimatoprost; D000069557:Travoprost