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Three Different Protocols of Corneal Collagen Crosslinking in Keratoconus: Conventional, Accelerated and Iontophoresis
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Rose-K contact lens for keratoconus.

Arun K Jain1, Jaspreet Sukhija

  • 1Department of Ophthalmology, Postgraduate Institute of Medical Education and Research, Chandigarh, India. aronkjain@yahoo.com

Indian Journal of Ophthalmology
|February 27, 2007
PubMed
Summary

Rose-K rigid contact lenses successfully fit 96-100% of moderate to severe keratoconus eyes. Axial topography maps better predict final contact lens base curves, ensuring good vision and comfort.

Area of Science:

  • Ophthalmology
  • Corneal disease
  • Contact lens technology

Background:

  • Keratoconus is a progressive thinning of the cornea, leading to irregular astigmatism and visual impairment.
  • Rigid gas permeable contact lenses, such as the Rose-K design, are a common treatment for visual rehabilitation in keratoconus.
  • Accurate fitting of contact lenses is crucial for optimal visual outcomes and patient comfort.

Purpose of the Study:

  • To evaluate the clinical success of Rose-K design contact lenses in patients with moderate and severe keratoconus.
  • To compare the predictive value of axial and instantaneous topography data for fitting these lenses.
  • To assess long-term visual acuity and contact lens wear comfort.

Main Methods:

  • A prospective study involving 38 eyes of 23 patients with keratoconus fitted with Rose-K lenses.

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  • Follow-up duration of at least six months.
  • Measurement of visual acuity, recording of axial and instantaneous topography maps, and grading of contact lens wear comfort.

    • Main Results:

    • Successful fitting rates of 100% for moderate and 96% for severe keratoconus.
    • Axial topography maps provided a significantly better prediction of the final contact lens base curve compared to instantaneous maps.
    • 90% of patients maintained comfortable contact lens wear over an average follow-up of 13 months.

    Conclusions:

    • Rose-K rigid contact lenses are highly effective for visual rehabilitation in moderate and severe keratoconus.
    • Axial corneal curvature measurements are more reliable predictors for Rose-K lens fitting than instantaneous maps.
    • The study demonstrates good long-term wearability and comfort with Rose-K lenses in this patient population.