由于角膜疾患而致盲者,在盲人中占很大比例,虽然各家统计数字(45.4％47.8％ 43％)不同,但都很惊人,而角膜的各种溷浊是其主要原因,因此角膜移植手术便成为眼科重要的复明手术之一。Φилатов和Бущмич按角膜白斑的程度及部分穿透性角膜移植的适应性将其分为五级。Ⅰ、Ⅱ、Ⅲ级角膜白斑为部分穿透角膜移植适应症。Ⅳ级就不大适合,成功希望较小。Ⅴ级角膜白斑,部分穿透角 Blind people due to corneal diseases account for a large proportion of the blind people. Although statistics (45.4%, 47.8% and 43%) are different from each other, they are all alarming. However, corneal turbidity is the main reason for this. Therefore, corneal transplantation Surgery has become one of the important ophthalmology surgery. Φилатов and Бущмич according to the degree of corneal leukoplakia and partial penetrating keratoplasty adaptability will be divided into five. Ⅰ, Ⅱ, Ⅲ grade leukoplakia as part of the penetrating indications for corneal transplantation. Ⅳ level is not suitable, less successful hope. Grade Ⅴ corneal leukoplakia, part of the penetration angle