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Efficacy of once-daily olopatadine 0.2% ophthalmic solution compared to twice-daily olopatadine 0.1% ophthalmic solution for the treatment of ocular itching induced by conjunctival allergen challenge.

AbstractOlopatadine 0.1% (Patanol) and olopatadine 0.2% (Pataday) ophthalmic solutions are topical ocular anti-allergic agents with antihistaminic and mast cell stabilizing properties. The efficacy of two doses of olopatadine 0.1% was compared to one dose of olopatadine 0.2% in the prevention of ocular itching associated with allergic conjunctivitis over 24 hours. This double-masked conjunctival allergen challenge (CAC) study found no significant difference in the mean itching scores between two drops of olopatadine 0.1% and one drop of olopatadine 0.2%. Both showed significant activity at the 24-hour time point and were statistically superior to placebo. No adverse events occurred while on drug therapy.
AuthorsMark B Abelson, Dennis L Spangler, Arthur B Epstein, Francis S Mah, H Jerome Crampton (Affiliation: Harvard Medical School, Schepens Eye Research Institute, Department of Ophthalmology, Boston, Massachusetts, USA.)
JournalCurrent eye research (Curr Eye Res) Vol. 32 Issue 12 Pg. 1017-22 (Dec 2007) ISSN: 0271-3683 England
PMID18085465 (Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
Chemical References
  • Allergens
  • Dibenzoxepins
  • Histamine H1 Antagonists, Non-Sedating
  • Ophthalmic Solutions
  • olopatadine
Topics
  • Adult
  • Allergens (adverse effects)
  • Conjunctiva (drug effects)
  • Conjunctivitis, Allergic (chemically induced, drug therapy)
  • Dibenzoxepins (administration & dosage)
  • Double-Blind Method
  • Female
  • Histamine H1 Antagonists, Non-Sedating (administration & dosage)
  • Humans
  • Male
  • Ophthalmic Solutions (administration & dosage)
  • Pruritus (drug therapy)
  • Skin Tests
  • Treatment Outcome