Topical eye antihistamines without decongestants

"For patients that would benefit from adjuvant topical antihistamine therapy, without a decongestant, they should be referred to the doctor to enquire about ocular products such as levocabastine(Livostin) , olopatadine (Patanol), emedastine (Emadine) or ketotifen (Zaditor)." The only nasal antihistamine product currently available in Canada is levocabastine (Livostin nasal spray).