眼部过敏性疾病可分为四类：过敏性角结膜炎、春季角结膜炎、大乳头状结膜炎和过敏性结膜炎。季节性（花粉相关的）过敏性结膜炎在过敏性眼疾病中最为常见的。与过敏性鼻炎和哮喘相似，皆由肥大细胞中的IgE触发过敏反应。肥大细胞中的介质（组胺和白三烯等）引起过敏症状的发生 Eye allergic diseases can be divided into four categories: allergic keratoconjunctivitis, vernal keratoconjunctivitis, large papillary conjunctivitis and allergic conjunctivitis. Seasonal (pollen-associated) allergic conjunctivitis is most common in allergic eye diseases. Similar to allergic rhinitis and asthma, allergic rhinitis is triggered by IgE in mast cells. Mast cells in the medium (histamine and leukotrienes, etc.) cause allergy symptoms