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Immediate refitting with gas permeable lenses.

E S Bennett

    Journal of the American Optometric Association
    |March 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Refitting long-term polymethylmethacrylate (PMMA) lens wearers with oxygen permeable rigid lenses effectively resolves corneal oxygen deprivation. This approach avoids permanent vision changes associated with older methods.

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    Optometry and vision science : official publication of the American Academy of Optometry·1998

    Area of Science:

    • Ophthalmology
    • Optometry
    • Corneal Physiology

    Background:

    • Long-term polymethylmethacrylate (PMMA) lens wear can lead to severe corneal oxygen deprivation.
    • Previous management strategies, including lens modification and discontinuation, had significant limitations.
    • These limitations could result in irreversible corneal curvature and refractive alterations.

    Purpose of the Study:

    • To evaluate the efficacy of immediately refitting PMMA lens wearers with gas permeable lenses.
    • To present a successful procedure for managing patients with corneal oxygen deprivation.
    • To ensure patient and optometrist satisfaction with the refitting process.

    Main Methods:

    • Transitioning patients from PMMA lenses to oxygen permeable rigid gas permeable (RGP) lenses.

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  • Implementing a standardized refitting protocol for compromised corneas.
  • Assessing patient outcomes and practitioner feedback.

    • Main Results:

    • The introduction of oxygen permeable rigid lenses significantly relieved corneal oxygen deprivation.
    • Immediate refitting with gas permeable lenses appears to have eliminated many previous complications.
    • The procedure has gained rapid approval and satisfaction among contact lens practitioners.

    Conclusions:

    • Immediate refitting with gas permeable lenses is a highly effective solution for long-term PMMA wearers experiencing corneal hypoxia.
    • This method successfully mitigates risks of permanent corneal and refractive changes.
    • The discussed procedure offers a satisfactory approach for both clinicians and patients.