phototherapeutic keratectomy

例句：

1. 1. The patient underwent a phototherapeutic keratectomy toimprove his vision.
   患者接受了光热疗法角膜切除术以改善视力。
2. 2. During theprocedure, the doctor useda laser to perform the phototherapeutic keratectomy.
   在手术过程中，医生使用激光进行了光热疗法角膜切除术。
3. 3. The success ofthe treatment was monitored by regular follow-up visits and photos taken before and afterthe procedure.
   治疗的成功与否通过定期的随访访问和手术前后的照片来监测。