Glaucoma may occur congenitally, as a primary disease, or secondary to other ocular or systemic conditions. 青光眼可以是先天性的，即原发性青光眼，也可以由其他眼科或系统性疾病引起。
Phacoanaphylactic endophthalmitis, phacolytic glaucoma and phacotoxic uveitis are all lens-induced uveitis with indistinctive clinical features. 摘要晶状体蛋白过敏性眼内炎，晶体溶解性青光眼和晶体中毒性虹彩炎，都是因为水晶体的燮化而产生之虹彩炎。
