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通过正常人290眼、慢性结角膜炎患者122眼睑板腺导管开口的观察发现，正常人眼18．9％有不同程度的开口阻塞，且随年龄增大其比例及程度有加重的趋势，慢性结角膜炎患者眼则表现更为严重的阻塞，阻塞比例达39．3％，且慢性炎症的病程越长，阻塞的比例及程度越大，但与病情的轻重关系不大。睑板腺导管开口的阻塞与慢性结角膜炎的迁延常常互为因果，因此必须重视睑板腺导管的通畅及开口的清洁。
Through the normal 290 eyes, chronic keratoconjunctivitis 122 patients with meibomian gland duct opening observation found that 18.9% of normal eyes have different degrees of occlusion, and with increasing age, the proportion and degree of aggravating trends, chronic Patients with keratoconjunctivitis showed more serious obstruction, the blockage rate was 39.3%, and the longer the duration of chronic inflammation, the greater the proportion and extent of obstruction, but not the severity of the disease. Meibomian ductal opening obstruction and the delay of keratoconjunctivitis often delay each other due to the causal relationship, it must pay attention to meibomian gland duct patency and opening of the clean.