{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,28]],"date-time":"2025-05-28T08:31:40Z","timestamp":1748421100841,"version":"3.40.5"},"reference-count":29,"publisher":"Media Sphere Publishing House","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rus. Ann. Ophthal."],"published-print":{"date-parts":[[2023,3,16]]},"abstract":"<jats:p>Contact lenses are widely used for correction of myopia due to their accessibility, effectiveness and relative safety. Purpose. This study evaluated the potential effects of conventional hard contact lenses (HCL) and orthokeratological contact lenses (OKL) on anatomical and functional condition of the cornea in myopia correction. Material and methods. The study included 80 patients (159 eyes) with low, moderate and high myopia. Group 1 consisted of 40 patients (79 eyes) who used conventional HCL; group 2 included 40 patients (80 eyes) who used OKL. All patients underwent topographic keratometry, corneal pachymetry mapping (Pentacam, Oculus, Germany; Visante OCT, Carl Zeiss, Germany), high-order aberrometry (OPD Scan, Nidek, Japan), confocal microscopy (Confoscan 4, Nidek, Japan), evaluation of corneal biomechanical properties (ORA, Reichert Technologies, USA) and corneal light scattering (Pentacam, Oculus, Germany). Examinations were taken before the treatment started and after 8\u201412 months of contact lens wear. Results. Group 1 showed corneal thickness increase in all zones (by 0.9\u20141.1%), no significant changes in corneal refraction, and increase in corneal hysteresis and corneal resistance factor. OKL wear led to a significant flattening of anterior surface of the cornea and steepening of its paracentral area, decrease in central corneal thickness (by 2.8%) and increase in mid-peripheral thickness (by 2.2%). No significant changes in posterior corneal surface were observed in the study patients. More significant increase in higher-order aberrations and the degree of light scattering was observed in group 2, while changes in subepithelial nerve plexus and stromal structure were more significant in group 1. Conclusion. Long-term OKL wear shows more significant morphological and functional corneal changes compared to RGP lens.<\/jats:p>","DOI":"10.17116\/oftalma20231390117","type":"journal-article","created":{"date-parts":[[2023,3,16]],"date-time":"2023-03-16T18:20:49Z","timestamp":1678990849000},"page":"7","source":"Crossref","is-referenced-by-count":1,"title":["Effect of conventional and orthokeratological hard contact lenses on anatomical and functional characteristics of the cornea"],"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 Disease","place":["Moscow, Russia"]},{"name":"I.M. Sechenov First Moscow State Medical University (Sechenov University)","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1760-3313","authenticated-orcid":false,"given":"G.M.","family":"Musaeva","sequence":"additional","affiliation":[{"name":"I.M. Sechenov First Moscow State Medical University (Sechenov University)","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1721-9378","authenticated-orcid":false,"given":"I.A.","family":"Bubnova","sequence":"additional","affiliation":[{"name":"Krasnov Research Institute of Eye Disease","place":["Moscow, Russia"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"6743","reference":[{"key":"key-10.17116\/oftalma20231390117-1","doi-asserted-by":"publisher","DOI":"10.1080\/02713683.2019.1687726"},{"key":"key-10.17116\/oftalma20231390117-2","doi-asserted-by":"publisher","DOI":"10.1111\/opo.12277"},{"key":"key-10.17116\/oftalma20231390117-3","unstructured":"Mountford JA, Ruston D, Dave T. Orthokeratology: principles and practice. 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