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Related Experiment Videos

Corneal topographic changes following retinal surgery.

Rajesh Sinha1, Namrata Sharma, Lalit Verma

  • 1Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi. sinharaj1@rediffmail.com

BMC Ophthalmology
|August 5, 2004
PubMed
Summary

Retinal surgeries significantly increase corneal elevations, particularly affecting the posterior corneal surface. This study analyzed topographic changes after various surgical procedures.

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Area of Science:

  • Ophthalmology
  • Corneal topography
  • Vitreoretinal surgery

Background:

  • Retinal and vitreoretinal surgeries are common procedures.
  • Understanding their impact on ocular structures is crucial.
  • Corneal changes following these surgeries require investigation.

Purpose of the Study:

  • To evaluate the effect of retinal/vitreoretinal surgeries on corneal elevations.
  • To compare changes in anterior and posterior corneal surfaces post-surgery.

Main Methods:

  • Patients were divided into three groups based on surgical procedure: scleral buckling, combined scleral buckling and vitreoretinal surgery, and pars plana vitrectomy.
  • Corneal topographic changes were assessed using Orbscan topography system II.
  • Parameters evaluated included best-corrected visual acuity (BCVA), axial length, and corneal elevations (anterior and posterior) pre- and post-surgery (12 weeks).

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Main Results:

  • A statistically significant increase in anterior corneal elevation was observed in all surgical groups.
  • A highly significant increase in posterior corneal elevation was noted across all groups.
  • The increase in posterior corneal elevation was significantly greater than the increase in anterior corneal elevation in all groups.

Conclusions:

  • Retinal/vitreoretinal surgeries lead to significant corneal elevations.
  • These surgical interventions have a more pronounced effect on the posterior corneal surface compared to the anterior surface.