Normally when patients undergo corrective laser eye surgery, surgeons use video cameras to track the position of the eye so that the surgical laser targets the right place on the cornea.
通常情况下，医生在对病人进行激光眼科校正手术时使用视频摄像机来跟踪眼球的转动，以便使激光手术刀落在正确的地方。
Surgery is the main treatment for ureteral polyps and a correct choice of the surgical approach should be decided by the lesion size, Numbers, position and loss degree of renal unit function.
输尿管息肉的治疗以手术为主，应根据息肉的大小、数量、部位及肾脏受累程度选择单纯切除术、输尿管部分切除术和肾盂成形术等。
Treatment procedures included surgical exposure of the high positioned canine, followed by bonding with a lingual button, and orthodontic traction the impacted canine to the proper position.
治疗时先以开窗手术露出此高位的犬齿牙冠后，黏上钮扣然后施予轻微的矫正力量牵引阻生犬齿至正常的位置。
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