A.V. DOGA¹, S.A. BORZENOK¹, I.A. MUSHKOVA¹, A.N. KARIMOVA¹, E.V. KECHIN¹, N.V. SHEVLYAGINA²

¹The S. Fyodorov Eye Microsurgery Federal State Institution, 59a Beskudnikovsky Blvd., Moscow, Russian Federation, 127486

²Federal Scientific-Research Center for Epidemiology and Microbiology named after N.F. Gamaley, 18 Gamaley Str., Moscow, Russian Federation, 123098 

Doga A.V. ― D. Med. Sc., Professor, Deputy Director General on Scientific-Clinical Work, tel. (499) 488-89-93, e-mail: alexander_doga@mail.ru

Borzenok S.A. ― D. Med. Sc., Professor, Head of the Center for Fundamental and Applied Biomedical Problems, tel. (499) 488-89-93, e-mail: mdborzenok@yandex.ru

Mushkova I.A. ― D. Med. Sc., Head of the Department of Refractive Laser Surgery, tel. (499) 488-85-26, e-mail: i.a.muskova@mail.ru

Karimova A.N. ― Cand. Med. Sc., Researcher of the Department of Refractive Laser Surgery, tel. (499) 488-85-26, e-mail: adelya.k.n@mail.ru

Kechin E.V. ― postgraduate student of the Department of Refractive Laser Surgery, tel. (499) 488-85-26, e-mail: evgeny.kechin@gmail.com

Shevlyagina N.V. ― Cand. Med. Sc., Senior Researcher of the Laboratory of Microorganisms’ Anatomy, tel. (499) 488-85-26, e-mail: evgeny.kechin@gmail.com

 Qualitative assessment on 8 cadaverine eyes was conducted of the corneal stromal bed after the flap formation using different femtosecond lasers: Femto Visum (Optosystems, Russia) (group 1, n=4) and Femto LDV Z6 (Ziemer, Switzerland) (group 2, n=4). The corneal stromal beds were investigated with scanning electron microscopy. The samples were assessed subjectively by three groups of researchers with a grading scale proposed by Sarayba M.A. et al. (2007), from 1 to 5, where 1 denotes the smoothest samples, and 5 ― the roughest. The samples were observed at x200 and x400 magnification. Mann — Whitney nonparametric statistical analysis of U-criterion was performed to compare groups. The Femto Visum device was proved to be able to form the corneal surface of high quality, not inferior to that created with Femto LDV Z6 (p_m-u>0,05).

Key words: LASIK, corneal stromal bed, quality of the surface, scanning electron microscopy, femtosecond laser, Femto Visum, Femto LDV.

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