Pronunciation: [ɪɹˈə͡ʊtəmɪ] (IPA)
Correct spelling for the English word "irotomy" is [ɪɹˈə͡ʊtəmɪ], [ɪɹˈəʊtəmɪ], [ɪ_ɹ_ˈəʊ_t_ə_m_ɪ] (IPA phonetic alphabet).
Iridotomy.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.