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Correlation between intraoperative and early postoperative keratometry.

S Masket

    Journal of Cataract and Refractive Surgery
    |May 1, 1988
    PubMed
    Summary
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    Intraoperative quantitative keratometry closely correlates with postoperative results when intraocular pressure is controlled during cataract surgery. This method helps reduce surgically induced astigmatism, improving patient outcomes.

    Area of Science:

    • Ophthalmology
    • Surgical Innovation
    • Corneal Physiology

    Background:

    • Previous studies found no reliable correlation between intraoperative and postoperative keratometry.
    • This lack of correlation limited the clinical utility of intraoperative quantitative keratometry.
    • Controlling surgical variables may enhance keratometric predictability.

    Purpose of the Study:

    • To assess the correlation between intraoperative quantitative keratometry and one-day postoperative keratometry.
    • To determine if controlling intraocular pressure during cataract surgery improves keratometric correlation.
    • To evaluate the role of intraoperative keratometry in minimizing iatrogenic astigmatism.

    Main Methods:

    • A study correlating intraoperative quantitative keratometry with one-day postoperative office keratometry.

    Related Experiment Videos

  • Controlled intraocular pressure (IOP) during scleral pocket wound closure in one group.
  • Uncontrolled IOP during wound closure in a separate group for comparison.

    • Main Results:

    • No statistical difference between intraoperative and postoperative corneal astigmatism when IOP was controlled.
    • Statistically significant differences in corneal cylinder when IOP was not controlled.
    • Controlled intraoperative keratometry demonstrated a vital role in reducing early postoperative astigmatism.

    Conclusions:

    • Intraoperative quantitative keratometry, with controlled intraocular pressure, is a reliable predictor of early postoperative astigmatism.
    • Tight control of surgical variables, particularly IOP, is crucial for accurate keratometric correlation.
    • This technique aids in reducing iatrogenic astigmatism following cataract surgery.