For citations:

Bikbov M.M., Surkova V.K., Khalimov A.R., Usubov E.L., Khalimova L.I. Topographic Localization of the Demarcation Line after UV Corneal Crosslinking in Progressive Keratoconus. Ophthalmology in Russia. 2018;15(1):32-37. (In Russ.) https://doi.org/10.18008/1816-5095-2018-1-32-37