学者们最初应用冶冻疗法治疗皮肤病,以后又用于治疗视网膜脱离及破坏睫状体以降低眼压。本文报导用冷冻法使血管闭塞,这样就可以在有血管增生的虹膜上进行手术,它还可以制止翼状胬肉的复发和消除角膜新生血管,从而增加角膜移植术的成功率。所用器械是将 Veil 氏者加以改良,空铜管长7时,直径1.5时,尖端为3×5毫米,管内装入固体 Scholars initially applied cryotherapy to treat skin diseases and later used to treat retinal detachment and destruction of the ciliary body to reduce intraocular pressure. This article reports the occlusion of blood vessels by cryosurgery so that surgery can be performed on the iris with angiogenesis. It can also prevent the recurrence of pterygium and eliminate corneal neovascularization, thereby increasing the success rate of corneal transplantation. The instruments used were modified Veil, empty copper tube length 7, the diameter of 1.5, the tip of 3 × 5 mm, the tube into the solid