E.A. EZHOVA, S.V. BALALIN The Volgograd Branch of the S. Fyodorov Eye Microsurgery Federal State Institution, 80 Zemlyachki Str., Volgograd, Russian Federation, 400138    Ezhova E.A. ― ophthalmologist, tel. (8442) 58-15-95, e-mail: [email protected] Balalin S.V. ― D. Med. Sc., Head of Research Department, tel. (8442) 56-16-44, e-mail: [email protected] ru The research has been performed of […]