Sentence: This study compared the efficacy of topical emedastine 0.05 % ophthalmic solution with that of oral loratadine 10 mg and their combination in the conjunctival allergen challenge model of allergic conjunctivitis .
Drug combination annotation:
[{'class': 'POS', 'spans': ['emedastine', 'loratadine'], 'is_context_needed': True}]