Related Experiment Videos
Correcting keratoconus with intracorneal rings.
J Colin1, B Cochener, G Savary
1Brest University Hospital, Brest, France. joseph.colin@univ-brest.fr
Journal of Cataract and Refractive Surgery
|September 29, 2000
Summary
Intrastromal corneal ring segments (Intacs) effectively correct keratoconus by reducing corneal steepening and astigmatism. This treatment improves uncorrected visual acuity in patients intolerant to contact lenses.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Vision Science
Background:
- Keratoconus is a progressive corneal ectasia characterized by thinning and irregular astigmatism.
- Contact lens intolerance is a common complication, significantly impacting patient quality of life.
- Intrastromal corneal ring segments offer a potential surgical solution for keratoconus management.
Purpose of the Study:
- To assess the efficacy of intrastromal corneal ring segments (Intacs) in correcting keratoconus.
- To evaluate the potential for visual acuity improvement without central corneal scarring.
- To determine the impact on corneal topography and refractive error.
Main Methods:
- A prospective, noncomparative, interventional case series involving 10 eyes with keratoconus.
- Intacs segments were implanted in eyes with clear central corneas and contact lens intolerance.
- Corneal pachymetry and topography guided segment selection and implantation.
Main Results:
- No intraoperative complications were reported during Intacs implantation.
- Mean follow-up was 10.6 months, demonstrating sustained outcomes.
- Significant reductions in astigmatism and spherical error were observed.
- Improvements in topographical regularity and uncorrected visual acuity were noted.
Conclusions:
- Intacs technology is a viable option for managing keratoconus.
- The procedure effectively reduces corneal steepening and associated astigmatism.
- Intacs can enhance visual function in keratoconus patients, mitigating contact lens dependence.