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A hyper-Dk piggyback contact lens system for keratoconus.
Clare O'Donnell1, Carole Maldonado-Codina
1Department of Optometry and Neuroscience, University of Manchester Institute of Science of Technology, Manchester, UK. clare.odonnell@umist.ac.uk
Eye & Contact Lens
|January 15, 2004
Summary
A novel hyper-oxygen permeable piggyback contact lens system successfully treated a keratoconus patient intolerant to other lenses. This advanced system improved vision, comfort, and reduced ocular inflammation.
Area of Science:
- Ophthalmology
- Corneal Disease Management
- Contact Lens Technology
Background:
- Keratoconus presents challenges in visual rehabilitation.
- Intolerance to conventional contact lenses is common in keratoconus patients.
- Novel contact lens solutions are needed for compromised corneas.
Observation:
- A keratoconus patient experienced suboptimal vision, corneal neovascularization, and hyperemia.
- The patient was intolerant to rigid gas-permeable lenses.
- A piggyback system with hyper-oxygen transmissible hydrogel and RGP lenses was trialed.
Findings:
- The hyper-Dk piggyback system significantly improved visual acuity and patient comfort.
- Lens wear time was extended with the new system.
- Corneal vascularization and conjunctival hyperemia markedly reduced.
Implications:
- This hyper-Dk piggyback system offers a viable solution for keratoconus patients.
- Potential applications include visual rehabilitation after refractive surgery, trauma, or keratoplasty.
- Advanced lens materials enable effective dual-lens systems for compromised corneas.