1, recurrent viral keratitis caused by corneal clouding, after a complete cure and within six months without further attacks, patients can be considered for corneal transplantation; 2, acid; alkali chemical burns corneal clouding patients, in the injury healed about six months, can do corneal transplantation; 3, corneal ulcers larger; invasion deeper, long untreated, the risk of perforation or to the central invasion of nibbling corneal ulcers when immediately Corneal transplantation; 4, congenital corneal degeneration; cone cornea and other patients, should also be immediately corneal transplantation; 5, patients with corneal scars caused by eye trauma, in order to make the eye function better, can also be considered for corneal transplantation. 6, fungal keratitis drug treatment is ineffective, there is a risk of eye perforation should be early corneal transplantation. Corneal diseases that cause the cornea to become cloudy from transparent and affect vision; such as corneal leukoplakia; corneal opacity; cone cornea; glaucoma or IOL surgery caused by herpetic keratopathy corneal dystrophy certain types of corneal ulcers, etc. According to the relevant laws of China for organ transplantation corresponding professional diagnosis and treatment subject registration of medical institutions in principle for the third class A hospitals, and must have the following conditions: 1, have the ability to clinical application of human organ transplantation technology in the hospital’s practicing physicians and other professional and technical personnel appropriate to the development of human organ transplantation; 2, have the equipment appropriate to the development of the clinical application of human organ transplantation technology facilities; 3. There is a clinical application of human organ transplantation technology and ethics committee; 4. There is a sound technical specification and management system.