翼状胬肉是眼科常见的一种外眼疾病 ,其发病机理不清。由于该病与紫外线照射及风沙、粉尘、花粉刺激有关 ,也与ＨＬＡ型别有关 ,而紫外线照射可使蛋白变性形成自身抗原。此病发生于角膜缘这一易于发生变态反应性眼病的部位 ,且与蚕蚀性角膜溃疡、春季性结膜炎等免疫性眼病有某 Pterygium is a common eye diseases outside the eye, the pathogenesis is unclear. As the disease and ultraviolet radiation and sand, dust, pollen stimulation, but also with the HLA type, and ultraviolet radiation can denature proteins to form their own antigens. The disease occurs in the limbus that is prone to allergic eye disease sites, and with the Mooren ulcer, spring conjunctivitis and other immune eye diseases have a