The cost is about over 10,000 yuan. If the corneal lesions have no superficial vascular infiltration or only a little, the success rate of the operation can reach 90%. If there is deep vascular infiltration or glaucoma, the success rate is reduced to 60%. If the corneal lesions are caused by burns or extreme vascular infiltration or combined with severe keratitis, the success rate is only 30%. Therefore, before performing corneal transplantation, it is necessary to carefully examine the condition of the cornea of ??both the donor and the recipient as an estimate of the outcome of the operation.