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Corneal astigmatic changes after pars plana vitrectomy.

H D Jampel1, J T Thompson, M Nunez

  • 1Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.

Retina (Philadelphia, Pa.)
|January 1, 1987
PubMed
Summary
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Pars plana vitrectomy may temporarily induce mild astigmatism in the cornea. However, this surgically induced astigmatism typically resolves within weeks, showing no significant long-term impact on corneal curvature.

Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Astigmatism Research

Background:

  • Pars plana vitrectomy is a common surgical procedure.
  • Understanding its impact on corneal optics is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate the effect of pars plana vitrectomy on postoperative corneal curvature.
  • To determine if pars plana vitrectomy induces clinically significant astigmatism.

Main Methods:

  • Prospective study of 67 eyes from 64 patients.
  • Patients underwent pars plana vitrectomy without a scleral buckle.
  • Corneal curvature was measured postoperatively.

Main Results:

  • An average of 1 D of against-the-rule astigmatism was induced immediately after surgery.

Related Experiment Videos

  • Corneal astigmatism spontaneously regressed to less than 0.15 D by the 7th postoperative week.

    • Conclusions:

    • Pars plana vitrectomy does not induce clinically significant corneal astigmatism.
    • Temporary astigmatic changes are expected but resolve over time.