Asymmetric Intrastromal Corneal Ring Segments in the Surgical Treatment of Keratoconus. Review
https://doi.org/10.18008/1816-5095-2025-4-750-757
Abstract
Keratoconus (KC) is a chronic progressive disease of the cornea characterized by thinning and cone-shaped protrusion, leading to a significant reduction in visual acuity. It is often difficult to correct optically using glasses or soft contact lenses. Surgical methods depend on the stage of KC and the rate of its progression. In the early stages, corneal collagen crosslinking (CXL) with various protocol modifications is most used, along with intralamellar keratoplasty (ILKP) with the implantation of corneal ring segments (ICRS) or rings. At later stages, penetrating (PKP) or deep anterior lamellar keratoplasty (DALK) may be required. However, despite the wide range of treatment options for KC, few methods are personalized and achieve high visual acuity outcomes. The issue of residual ametropia and irregular astigmatism remains unresolved, making the development of new approaches to the surgical treatment of KC a relevant and pressing challenge to this day.
Keywords
Supporting agencies: no author has a financial or property interest in any material or method mentioned
About the Authors
D. A. Sagonenko
Outpatient Eye Microsurgery Clinic
Russian Federation
Russian Federation
Sagonenko Dmitry A. – postgraduate.
Yablochkova str., 21, bld. 3, Moscow, 127322
Yu. Yu. Kalinnikov
Russian University of Medicine (ROSUNIMED)
Russian Federation
Russian Federation
Kalinnikov Yury Yu. - MD, Professor.
Delegatskaya str., 20, Moscow, 127473
S. Yu. Kalinnikova
S. Fyodorov Eye Microsurgery Federal State Institution
Russian Federation
Russian Federation
Kalinnikova Svetlana Yu. - PhD, researcher.
Beskudnikovsky ave., 59А, Moscow, 127486
L. F. Ragimova
Russian University of Medicine (ROSUNIMED)
Russian Federation
Russian Federation
Rahimova Laman F. - postgraduate.
Delegatskaya str., 20, Moscow, 127473
Z. M. Ismailova
S. Fyodorov Eye Microsurgery Federal State Institution
Russian Federation
Russian Federation
Ismailova Zuri M. – postgraduate.
Beskudnikovsky ave., 59А, Moscow, 127486
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Review
For citations:
Sagonenko D.A., Kalinnikov Yu.Yu., Kalinnikova S.Yu., Ragimova L.F., Ismailova Z.M. Asymmetric Intrastromal Corneal Ring Segments in the Surgical Treatment of Keratoconus. Review. Ophthalmology in Russia. 2025;22(4):750-757. (In Russ.) https://doi.org/10.18008/1816-5095-2025-4-750-757
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