corneal tattooing

例句：

1. 1.The procedure involves injecting pigment into the cornea to create a permanent tattoo.
   该过程涉及将色素注入角膜，以创建永久性纹身。
2. 2. She decided to get a corneal tattoo for her wedding day.
   她决定在婚礼当天纹一个角膜纹身。
3. 3.The corneal tattoo was so small that it barely looked like anything.
   这个角膜纹身太小了，几乎看不出来。