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Related Experiment Videos

Retinal detachment after choroidal ischemia.

A Gaudric1, M Sterkers, G Coscas

  • 1Clinique Ophthalmologique Universitaire de Creteil, Université Paris XII, Hôpital Intercommunal, France.

American Journal of Ophthalmology
|October 15, 1987
PubMed
Summary
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Injecting microspheres into monkey eyes caused choroidal ischemia, damaging the retinal pigment epithelium and causing detachments. Lesion severity correlated with injected microsphere volume, impacting ocular health.

Area of Science:

  • Ophthalmology
  • Vascular Biology
  • Microscopy

Background:

  • Choroidal ischemia can lead to significant vision impairment.
  • Understanding the effects of embolization on ocular structures is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the effects of microsphere embolization on the choroid and retinal pigment epithelium in a primate model.
  • To document the resulting pathological changes and their severity.

Main Methods:

  • Injection of 15-micron microsphere suspension into vortex veins of nine monkey eyes.
  • Documentation using fluorescein angiography and electron microscopy.
  • Histologic examination of retinal pigment epithelium damage.

Main Results:

Related Experiment Videos

  • Varied degrees of sectorial choroidal ischemia were observed.
  • Increased injected microsphere volume led to more severe fundus lesions.
  • Retinal pigment epithelium damage, including vacuolization and cell membrane rupture, was noted.
  • Serous retinal detachments and delayed choroidal filling occurred in some eyes.

Conclusions:

  • Microsphere embolization induces choroidal ischemia and retinal pigment epithelium damage in primates.
  • The volume of injected microspheres is a key determinant of lesion severity.
  • These findings provide insights into the pathophysiology of embolization-induced ocular injury.