眼前节碱烧伤在临床上较为常见，其临床特征为病情严重发展迅速，若处理不当或稍有延误，常对眼前节及视功能造成摧毁性的损伤。在临床治疗期间，常遇到一些患者反复发生无菌性角膜溃疡，甚至角膜穿孔，目前认为这种溃疡是由于胶原酶使角膜基质胶原纤维溶解破裂所致［‘］。我 Anterior segment of alkali burn is more common in clinical practice, its clinical characteristics for the rapid development of serious illness, if not handled properly or a slight delay, often on the anterior segment and visual function caused destructive damage. During clinical treatment, often encountered in some patients with recurrent aseptic corneal ulcers, and even corneal perforation, the current view that this ulcer is due to collagenase collagen matrix rupture caused by the dissolution of the cornea. I