[Antazoline/tetryzoline eyedrops in comparison with levocabastine eyedrops in acute allergic conjunctivitis]. Antazolin/Tetryzolinhaltige Augentropfen im Vergleich zu Levocabastinhaltigen Augentropfen bei akuter allergischer Konjunktivitis. BACKGROUND: Allergic conjunctivitis is one of the most frequent allergic diseases of the anterior eye segment. METHODS: This multicentre, clinical trial was an investigation to compare the antiallergic efficacy, local tolerance and safety of Antazolin/Tetryzolin eye drops and Levocabastine eye drops. 69 patients were treated over a 2 weeks course of therapy. The subjective and objective ocular symptoms were documented over the treatment period. RESULTS: Both eye drops reduced subjective and objective ocular symptoms effective. The difference between the treatments (p = 0.0395) was the faster onset of action of Antazolin/Tetryzolin 30 minutes after administration of the first drop of trial medication. CONCLUSION: A fast and effective onset of action is of high clinical relevance. Therefore the benefits of using Antazolin/Tetryzolin eye drops was clearly outweigh.