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Related Experiment Videos

Thermokeratoplasty for keratoconus.

R H Keates, J Dingle

    Ophthalmic Surgery
    |January 1, 1975
    PubMed
    Summary

    Thermokeratoplasty significantly flattened corneas in severe keratoconus patients, with readings returning to baseline in most. Some patients avoided surgery due to better contact lens fit, while others had successful corneal transplants.

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    Area of Science:

    • Ophthalmology
    • Corneal Surgery
    • Vision Science

    Background:

    • Severe keratoconus often necessitates penetrating keratoplasty for vision restoration.
    • Thermokeratoplasty is a surgical technique used to alter corneal curvature.

    Purpose of the Study:

    • To evaluate the efficacy of thermokeratoplasty in patients with severe keratoconus awaiting penetrating keratoplasty.
    • To assess visual outcomes and the need for subsequent corneal transplantation.

    Main Methods:

    • Nine patients with severe keratoconus underwent thermokeratoplasty.
    • Corneal steepness was measured using keratometry before and after the procedure.
    • Patient outcomes, including the need for penetrating keratoplasty and contact lens fit, were monitored.

    Main Results:

    • Thermokeratoplasty resulted in profound corneal flattening in all patients.
    • Keratometer readings returned to pretreatment levels in seven out of nine patients.
    • Two patients avoided penetrating keratoplasty due to improved contact lens tolerance, despite the return of corneal steepness.

    Conclusions:

    • Thermokeratoplasty can be an effective preliminary procedure for severe keratoconus, potentially delaying or avoiding penetrating keratoplasty.
    • The procedure offers benefits in improving contact lens fit for some patients.
    • Subsequent penetrating keratoplasty in patients who underwent prior thermokeratoplasty was uneventful with clear grafts.

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