Open AccessVisual rehabilitation of patients with irregular cornea
Author(s) -
А. В. Мягков,
Е. В. Белоусова,
N V Ignatova,
О. А. Петрова
Publication year - 2019
Publication title -
glaz
Language(s) - English
Resource type - Journals
eISSN - 2686-8083
pISSN - 2222-4408
DOI - 10.33791/2222-4408-2019-1-26-32
Subject(s) - keratoconus , visual acuity , visual rehabilitation , ophthalmology , cornea , medicine , ectasia , corneal topography , optometry , surgery
Purpose: To estimate the possibility of optical correction of an irregular surface of a cornea at primary ectasia (keratoconus) and secondary ectasia (a consequenceof radial keratotomy (RKT) and Keratoplasty) for improvement of the maximum of visual acuity.Material and methods: In the study the scleral gas-permeable lenses (SGCL) were fitting by the 60 patients, it was 45 men and 15 women from them. The 46 patients had various stage of keratoconus and 14 patients had the keratectasia after RKT. On the 5 eyes of the patients was carried out keratoplasty earlier. Criteria of successful selection of SGCL considered achievement of steadily high visual acuity, comfort of carrying and the optimal clearance in apical zone, in the limbal and landing zone on the conjunctivaalso.The results: In the course of the study, the maximum visual acuity in all patients was achieved with mini-SGKL correction irrespective of type of keratoektasia.All patients observed visual comfort compared with spectacle correction or correction with other types of contact lenses.Conclusion: Scleral gas-permeable contact lenses are the main method of correction at patients with irregular corneas and provide the best visual acuity.