Oxygen transmission in modern rigid contact lens practice: reassessing the role of high-Dk materials
https://doi.org/10.33791/2222-4408-2026-2-164-166
Abstract
The article discusses the importance of high oxygen permeability (Dk) for modern rigid contact lenses, especially in conditions of night wear (orthokeratology) and the use of scleral lenses. The use of silicone monomers such as Styrl TRIS makes it possible to achieve Dk values up to 180–250 while simultaneously improving lens stiffness and wettability. New developments from Contamac (Optimum Infi nite and Optimum Breathe) provide safe corneal oxygenation even with increased lens thickness.
Keywords
About the Author
M. EddlestonUnited Kingdom
Mark Eddleston, PhD from the University of Cambridge, Project Leader within
Carlton House, Shire Hill, Saffron Walden, Essex CB11 3AU
References
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2. Holden BA, Mertz GW. Critical oxygen levels to avoid corneal edema for daily and extended wear contact lenses. Invest Ophthalmol Vis Sci. 1984;25(10):1161–1167.
3. Harvitt DM, Bonanno JA. Re-evaluation of the oxygen diffusion model for predicting minimum contact lens Dk/t values needed to avoid corneal anoxia. Optom Vis Sci. 1999;76(10):712–719. doi: 10.1097/00006324-199910000-00023
Review
For citations:
Eddleston M. Oxygen transmission in modern rigid contact lens practice: reassessing the role of high-Dk materials. The EYE GLAZ. 2026;28(2):164-166. (In Russ.) https://doi.org/10.33791/2222-4408-2026-2-164-166
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