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One-year longitudinal study of corneal changes after different vitrectomy procedures using confocal microscopy.

Xianjin Zhou1, Jun Xiang2,3, Weiteng Chang2,3

  • 1Department of Ophthalmology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Scientific Reports
|February 12, 2025
PubMed
Summary

Vitrectomy surgery impacts corneal cells, with different tamponades like C3F8 and silicone oil causing distinct stromal and endothelial changes. Careful selection of surgical techniques and tamponades is crucial for managing these corneal alterations.

Keywords:
C3F8Corneal endotheliumEndothelial cell lossIn vivo confocal microscopy (IVCM)Phakia.Silicone oilVitrectomy

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Area of Science:

  • Ophthalmology
  • Corneal Science
  • Surgical Innovation

Background:

  • Vitrectomy is a common surgical procedure for various retinal conditions.
  • Corneal alterations following vitrectomy can impact visual outcomes.
  • Understanding the effects of different surgical techniques and tamponades on the cornea is essential.

Purpose of the Study:

  • To evaluate corneal stromal and endothelial cell changes after vitrectomy using in vivo confocal microscopy (IVCM).
  • To investigate the influence of different surgical approaches and intraocular tamponades (Air, C3F8, Silicone Oil) on corneal health.
  • To correlate observed corneal alterations with specific vitrectomy techniques and tamponade agents.

Main Methods:

  • Prospective cohort study involving 98 patients undergoing vitrectomy.
  • In vivo confocal microscopy (IVCM) used for detailed corneal imaging.
  • Preoperative and serial postoperative assessments (1-12 months) of corneal stromal and endothelial cells, intraocular pressure, and fundus examination.

Main Results:

  • Significant increase in posterior stromal cell density with C3F8 tamponade; decrease in anterior stromal cell density with silicone oil.
  • Increased prevalence of keratic precipitates and endothelial changes post-surgery, particularly with C3F8.
  • Endothelial cell loss varied by tamponade at 3 and 12 months, with silicone oil and C3F8 showing higher rates in certain combinations.

Conclusions:

  • Vitrectomy significantly alters corneal stromal and endothelial cells, with effects varying by tamponade agent and surgical technique.
  • C3F8 and silicone oil tamponades, especially combined with phacoemulsification, induce distinct corneal responses.
  • Tailored postoperative care and careful surgical planning are necessary to mitigate vitrectomy-induced corneal complications.