straight iris knife

例句：

1. 1. The surgeonused a straight iris knife to cutthrough the tissue.
   外科医生用直的虹膜剪切开了组织。
2. 2. The nurse carefullyremoved the straight iris knife from thepatient's eye.
   护士小心翼翼地从病人的眼睛中取出直的虹膜剪。
3. 3. Thedoctor used a straight iris knife toperform the surgery.
   医生用直的虹膜剪进行了手术。