角膜病是致盲的主要眼病之一。近年来 ,在发达国家中随着经济的发展 ,引起角膜病的原因发生了明显的变化 ,因感染而引起角膜溃疡的发病率已逐渐下降 ,而非感染性角膜病 (包括大泡性角膜病变 )则逐年增加。在发展中国家 ,感染性角膜病变仍占主导地位。我国因感染引起角膜溃疡的 Corneal disease is one of the major eye diseases that cause blindness. In recent years, with the economic development in developed countries, the cause of corneal disease has undergone significant changes, the incidence of corneal ulcers caused by infection has been gradually decreased, and non-infectious keratopathy (including bullous keratopathy ) Is increasing year by year. In developing countries, infectious keratopathy still dominates. Corneal ulcer caused by infection in our country