homokeratoplasty

例句：

1. 1. The patient underwent homokeratoplasty to improve his vision.
   患者接受了自体移植术以改善视力。
2. 2. The procedure involves removing a damaged cornea and replacing it with a healthy one from the same individual.
   该程序涉及移除受损的角膜并从同一个体取出健康的角膜进行替换。
3. 3. The success of the surgery depends on the quality of the donor tissue, which is why it's important to choose a suitable donor.
   手术的成功取决于供体组织的质量，这就是为什么选择合适的供体很重要。