角膜溃疡一般难以治愈。现已了解其发病机理与胶原酶有关。近年由于对胶原酶抑制剂进行了研究,使疗效获得显著的提高。从效果、刺激性及安全性全面出发考虑,胶原酶抑制剂中以半胱氨酸最好,用其滴眼剂治疗角膜疱疹,取得很好的效果。但半胱氨酸的水溶液很不稳定,必须隔天或每天(夏季)配制,非常麻烦。也有用强力Neo- Corneal ulcers are generally difficult to cure. Now understand its pathogenesis and collagenase. In recent years due to collagenase inhibitors were studied, so that the efficacy was significantly improved. From the perspective of efficacy, irritation and safety, cysteine ​​is the best collagenase inhibitor and corneal herpes is treated with its eye drops, achieving good results. However, the aqueous solution of cysteine ​​is very unstable and must be prepared on a daily or daily basis (in summer), which is very troublesome. Also useful for tough Neo-