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Improvement of early diagnosis of KC is associated with evaluation of microstructural changes in the cornea using computerized methods such as Scheimpflug camera and high-definition optical methods for visualization of initial signs of a pigment ring. The main optimization directions of KC contact correction are associated with increasing gas permeability of the material, improving lens design and methods of lens fitting. Customized fitting of gas-permeable scleral hard contact lenses with consideration of topographic features of the anterior corneal surface allows achieving stable lens positioning and preserving the tear gap between the lens and the cornea. Alternative methods of correcting the refraction component of KC are associated with surgical interventions involving increase in corneal volume in the paracentral area. Implantation of corneal ring segments should be considered as an alternative to correction of refractive errors in cases with unsatisfactory individual subjective tolerance and insufficient patient compliance with contact correction. Femtolaser-assisted implantation of intrastromal allotransplants along with a decrease in the degree of spherical and astigmatic components of refractive errors contribute to prevention of KC progression. Advancement of techniques of corneal collagen cross-linking for prevention of KC progression is aimed at reducing the risk of developing post-operative complications directly related to the extent of intraoperative deepithelization. Limiting corneal ectatic area by implantation of intrastromal allotransplants can be considered an alternative approach. Deep anterior lamellar keratoplasty and penetrating keratoplasty are the surgeries of choice in replacing altered corneal layers in KC. With regard to the modern trends in selective keratoplasty, selective replacement of the cornea in lamellar keratoplasty reduces the rate of injuries and the risk of tissue reaction.<\/jats:p>","DOI":"10.17116\/oftalma202313903211","type":"journal-article","created":{"date-parts":[[2023,5,5]],"date-time":"2023-05-05T04:49:59Z","timestamp":1683262199000},"page":"11","source":"Crossref","is-referenced-by-count":13,"special_numbering":"Vyp. 2","title":["Keratoconus: main lines of research"],"prefix":"10.17116","volume":"139","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7115-4275","authenticated-orcid":false,"given":"S.E.","family":"Avetisov","sequence":"first","affiliation":[{"name":"Krasnov Research Institute of Eye Diseases","place":["Moscow, Russia"]},{"name":"Sechenov First Moscow State Medical University","place":["Moscow, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5778-4123","authenticated-orcid":false,"given":"V.V.","family":"Averich","sequence":"additional","affiliation":[{"name":"Krasnov Research Institute of Eye Diseases","place":["Moscow, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5757-6719","authenticated-orcid":false,"given":"L.S.","family":"Pateyuk","sequence":"additional","affiliation":[{"name":"Krasnov Research Institute of Eye Diseases","place":["Moscow, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"6743","reference":[{"key":"key-10.17116\/oftalma202313903211-1","unstructured":"Kasparova EA. 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