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Related Experiment Videos

Pachometry before and after vitrectomy with silicone oil injection.

H Buch1, N V Nielsen, J U Prause

  • 1Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Denmark.

Acta Ophthalmologica Scandinavica
|August 27, 1999
PubMed
Summary

Silicone oil injection after vitrectomy causes temporary corneal thickening, similar to other vitreous substitutes. Central corneal thickness (CCT) changes were reversible within five months, indicating no significant difference in corneal decompensation.

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Area of Science:

  • Ophthalmology
  • Retinal Surgery
  • Corneal Physiology

Background:

  • Vitrectomy often requires vitreous substitution to maintain intraocular pressure and retinal stability.
  • Silicone oil is a common vitreous substitute, but its effect on corneal health requires evaluation.
  • Understanding the impact of different vitreous substitutes on central corneal thickness (CCT) is crucial for patient outcomes.

Purpose of the Study:

  • To compare central corneal thickness (CCT) changes after vitrectomy using silicone oil versus other vitreous substitutes.
  • To determine if silicone oil causes more frequent or severe corneal decompensation.
  • To assess the reversibility of CCT changes post-vitrectomy.

Main Methods:

  • Ultrasonic pachometry was used to measure CCT in 42 eyes.

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  • Eyes were divided into two groups: silicone oil (25 eyes) and C3F8, air, or saline (17 eyes).
  • CCT measurements were taken pre-operatively and at 24 hours, 48 hours, and five months post-operatively.

    • Main Results:

    • Progressive central corneal thickening was observed in both groups.
    • Silicone oil eyes showed a maximum CCT increase of 14.1% at 48 hours post-operatively.
    • CCT returned to baseline values in both groups by the five-month follow-up; silicone oil did not induce significantly different CCT changes.

    Conclusions:

    • Silicone oil injection during retinal detachment surgery leads to reversible corneal decompensation.
    • The degree of corneal decompensation induced by silicone oil is comparable to other vitreous substitution materials within five months.
    • These findings suggest silicone oil is a safe option regarding short-term corneal health in vitrectomy patients.