I. A. Frolychev
Cheboksary branch of S. Fyodorov Eye Microsurgery Federal State Institution
Russian Federation

Research assistant
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation

N. P. Pashtaev
Cheboksary branch of S. Fyodorov Eye Microsurgery Federal State Institution SAI “The Postgraduate Doctors’Training Institute” of Health Ministry of the Chuvash Republic
Russian Federation

MD, professor, Cheboksary clinic director; professor, ophthalmology course head
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation.
Mihail Sespel str., 27, Cheboksary, 428018, Russian Federation

N. A. Pozdeyeva
Cheboksary branch of S. Fyodorov Eye Microsurgery Federal State Institution SAI “The Postgraduate Doctors’Training Institute”
Russian Federation

MD, deputy director in scientific work; lecturer of ophthalmology course
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation.
Mihail Sespel str., 27, Cheboksary, 428018, Russian Federation

D. V. Sycheva
SAI “The Postgraduate Doctors ’Training Institute” of Health Ministry of the Chuvash Republic
Russian Federation

Resident physician
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation