iridectomy
  虹膜切除術
  iri·dec·to·my /ˌɪrəˈdɛktəmɪ, ˌaɪr-/ 名詞
  虹膜切除術
  Ir·i·dec·to·my n.  Surg. The act or process of cutting out a portion of the iris in order to form an artificial pupil.
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  iridectomy
       n : surgical removal of part of the iris of the eye