V.N. KANYUKOV1, I.I. KAGAN2, E.A. BAZHITOVA1,2 1Orenburg branch of the S. Fyodorov Eye Microsurgery Federal State Institution, 17 Salmyshskaya Str., Orenburg, Russian Federation, 460047 2Orenburg State Medical University, 6 Sovetskaya Str., Orenburg, Russian Federation, 460000  Kanyukov V.N. ― D. Med. Sc., Professor, Chief Consultant, tel. (3532) 64-48-18, e-mail: [email protected] Kagan I.I. ― D. Med. Sc., […]