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Aphakic keratoplasty: visual acuity and optical errors

R J Olson, T P Mattingly, S R Waltman

    Ophthalmology
    |July 1, 1980
    PubMed
    Summary
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    Aphakic penetrating keratoplasty offers excellent technical success. Poor visual acuity in patients is often due to non-corneal pathology, not the corneal graft itself.

    Area of Science:

    • Ophthalmology
    • Corneal Surgery

    Background:

    • Aphakic penetrating keratoplasty (PKP) is a surgical procedure to restore vision in eyes without a natural lens.
    • Combined procedures with intracapsular cataract extraction (ICCE) are also performed.
    • Graft success and visual outcomes require careful evaluation.

    Purpose of the Study:

    • To assess the outcomes of aphakic PKP and combined PKP-ICCE.
    • To identify factors affecting visual acuity and graft survival.
    • To evaluate the impact of graft size on outcomes.

    Main Methods:

    • Prospective review of 64 consecutive patients undergoing aphakic PKP or PKP-ICCE.
    • Minimum one-year follow-up period.
    • Analysis of graft failures, visual acuity, refractive error, and astigmatism.

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    Main Results:

    • Seven graft failures occurred within one year.
    • 29 patients achieved visual acuity of 20/80 or better.
    • Non-corneal pathologies like macular degeneration and glaucoma were primary causes of poor visual acuity.

    Conclusions:

    • Aphakic PKP demonstrates high technical success rates.
    • Visual outcomes are significantly impacted by pre-existing non-corneal ocular pathology.
    • Modern techniques offer good visual potential in otherwise healthy eyes undergoing aphakic PKP.