S.F. SHKOLNIK, A.Yu. VASILYEVA Cheboksary branch of the S. Fedorov Eye Microsurgery Federal State Institution, 10 Traktorostroiteley Pr., Cheboksary, Russian Federation, 428028  Shkolnik S.F. ― Cand. Med. Sc., Head of Dacryology Group, Head of Operational Unit, tel. (8352) 49-24-72, e-mail: s_shkolnik@mail.ru Vasilyeva A.Yu. ― ophthalmologist of the 3rd Ophthalmology Department, member of Dacryology Group, tel. […]