Equis ISSN 2398-2977

Hyaloid apparatus disease

Contributor(s): Dennis E Brooks, Graham Munroe

Introduction

  • The developing lens in the fetus is supplied with nutrition via the hyaloid apparatus which consists of:
  • The hyaloid artery: traverses from optic disk to the posterior pole of lens.
  • The anterior and posterior tunica vasculosa lentis (anterior and posterior pupillary membrane): envelop the lens in a vascular tunic.
  • The vitreous is produced as 3 types:
  • Primary: between the embryonic lens and retina; produced by the hyaloid apparatus.
  • Secondary: vitreous of the adult eye; produced by special retinal cells.
  • Tertiary: possibly related to the lens zonules.

Pathogenesis

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Clinical Signs

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Diagnosis

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Treatment

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Prognosis

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Further Reading

Publications

Refereed papers
  • Munroe G A (1998)The hyaloid apparatus in the neonatal Thoroughbred foal. Vet RecIn press.


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