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Related Experiment Videos

Intrastromal corneal ring, a new refractive surgical technique to decrease myopia. Experimental and clinical results

Z Nagy1, G Krasznai, L Módis

  • 1Department of Ophthalmology, Géza Hetényi Hospital of Jász-Nagykun-Szolnok County, Debrecen, Hungary.

Acta Chirurgica Hungarica
|January 1, 1997
PubMed
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Intrastromal corneal ring (ICR) implantation effectively treated myopia in dogs and human patients. This keratorefractive surgery demonstrated permanent visual acuity improvements and corneal clarity, offering a viable alternative to other refractive procedures.

Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Myopia Management

Background:

  • Myopia is a common refractive error impacting visual acuity.
  • Existing keratorefractive surgeries like radial keratotomy (RK) and photorefractive keratectomy (PRK) have limitations.
  • Intrastromal corneal ring (ICR) implantation presents a novel approach for myopia correction.

Purpose of the Study:

  • To evaluate the efficacy and safety of the intrastromal corneal ring (ICR) technique for myopia treatment.
  • To assess the long-term stability of visual outcomes following ICR implantation.
  • To compare ICR outcomes with established refractive surgical methods.

Main Methods:

  • Surgical implantation of intrastromal corneal rings (ICR) in canine models.
  • Post-operative evaluation using slit lamp examinations, corneal topography, and histological analysis.

Related Experiment Videos

  • Clinical application of ICR in three patients with high myopia, followed by visual acuity and topographic assessments.

    • Main Results:

    • Favorable outcomes observed in canine models, with clear and stable corneal tissues around the implanted polymethyl methacrylate (PMMA) rings.
    • Successful correction of up to 10.0 diopters of myopia in human patients.
    • Sustained visual acuity and corneal stability observed 3-10 months post-surgery.

    Conclusions:

    • Intrastromal corneal ring (ICR) implantation is a safe and effective method for correcting myopia.
    • The ICR technique offers permanent visual correction comparable to established refractive surgeries.
    • ICR implantation represents a promising alternative in the field of keratorefractive surgery.