N.Ya. SENCHENKO¹, T.N. YURYEVA^1,2

¹Irkutsk branch of the S. Fyodorov Eye Microsurgery Federal State Institution, 337 Lermontov Str., Irkutsk, Russian Federation, 664033

²Irkutsk State Medical Academy — Branch Campus of the RMACPE MOH Russia, 100 Yubileyniy district, Irkutsk, Russian Federation, 664079

  Senchenko N.Y. — Cand. Med. Sc., Head of the 1^st Surgical Department, tel. +7-914-941-30-93, e-mail: nadezdasenchenko@gmail.com

Yuryeva T.N. — D. Med. Sc., Professor, Deputy Director on Scientific Work, Professor of the Departments of Eye Diseases, tel. +7-914-926-72-90, e-mail: tnyurieva@mail.ru

 The article presents the results of analysis of clinical efficiency of penetrating keratoplasty in severe idiopathic and iatrogenic forms of corneal ectasia. 9 patients were operated, 3 of them for pellucidal marginal degeneration of the cornea and 6 — for keratectasia due to refractive interventions. 4 patients at the same time underwent cataract phacoemulsification with implantation of an elastic intraocular lens (3 cases) and a monoblock “artificial iris-IOL” (1 case). The biological and functional results were evaluated 1 year after the operation. Transparent transplant engraftment was achieved in all cases. Epithelial cell density (ECD) in patients with pellucidal marginal degeneration of the cornea was 2123±248 cells/mm², with induced ecstasia — 2365±118 cells/mm². Losses of ECD ranged from 18% to 32%. In patients with iatrogenic ectasia, the highest visual functions were achieved — on average 0.5±0.05 without correction and 0.8±0.02 with correction. In the case of pellucid marginal degeneration of the cornea, the visual acuity was 0.2 ± 0.01 and 0.35 ± 0.05, respectively. In general, high efficiency of penetrating keratoplasty was noted in ectasia, characterized by pronounced deformation and or atypical thinning of the cornea in theperipheral prelimbal zone.

Key words: ectasia, idiopathic, iatrogenic, keratoplasty, keratotomy, keratomileusis, complications.

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