A.D. CHUPROV, K.V. MAL’GIN Orenburg branch of S. Fyodorov Eye Microsurgery Federal State Institution, 17 Salmyshskaya Str., Orenburg, Russian Federation, 460047  Chuprov A.D. ― D. Sc. (medicine), Professor, Director, tel. (3532) 36-44-59, e-mail: [email protected] Mal’gin K.V. ― Head of the Research and Academic Department, ophthalmosurgeon, tel. (3532) 65-06-82, e-mail: [email protected]  The study included 560 patients […]