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Related Experiment Videos

A new fluorocarbon for keratoprosthesis.

J M Legeais1, C Rossi, G Renard

  • 1Department of Ophthalmology, Hotel-Dieu de Paris, INSERM U 86, France.

Cornea
|November 1, 1992
PubMed
Summary

Impra, a microporous material, demonstrated superior biocompatibility for keratoprosthesis by promoting corneal tissue ingrowth and neocollagen synthesis, unlike Gore-Tex and Proplast implants in rabbit corneas.

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Area of Science:

  • Biomaterials Science
  • Ophthalmology
  • Tissue Engineering

Background:

  • Microporous, biocompatible materials show promise for improving keratoprosthesis stability.
  • Understanding factors influencing corneal tissue ingrowth into these materials is crucial.

Purpose of the Study:

  • To compare the tissue response to three fluorocarbon polymers (Impra, Gore-Tex, Proplast) implanted intrastromally in rabbit corneas.
  • To identify key material properties influencing corneal tissue integration.

Main Methods:

  • Intrastromal implantation of Impra, Gore-Tex, and Proplast in rabbit corneas.
  • Histologic, ultrastructural, electron microscopy, and image analysis at 4- and 8-month follow-ups.

Main Results:

Related Experiment Videos

  • Gore-Tex implants showed extrusion and inflammatory cell infiltration.
  • Proplast implants caused significant corneal damage and extrusion.
  • Impra implants facilitated cell differentiation and neocollagen synthesis within pores, demonstrating good biocompatibility.

    • Conclusions:

    • Material properties like pore size, microorganization, and biomechanics significantly impact tissue integration.
    • Impra exhibits a satisfactory interface for fibroblastic infiltration and neocollagen synthesis, suggesting potential for transparent prosthetic corneas.