Canis ISSN: 2398-2942

Asteroid hyalosis

Contributor(s): David L Williams

Introduction

  • A characteristic degenerative process of the vitreous.
  • Cause: idiopathic degeneration of ageing vitreous.
  • Signs: ophthalmoscopic signs of white deposits in vitreous humor.
  • Diagnosis: ophthalmoscopy.
  • Treatment: none required.

Pathogenesis

Etiology

  • These white deposits are a calcium-lipid complex, attached to the fibrillar framework of the vitreous.

Pathophysiology

  • The exact etiopathogenesis is unclear but aging changes result in these calcium-lipid deposits attaching to the degenerating collagen network of the vitreous.

Timecourse

  • A chronic degenerative condition seen in older dogs.

Diagnosis

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Leon A (1988) Diseases of the vitreous in the dog and cat. JSAP 29 (7), 448-461 VetMedResource.
  • Winkler J & Lünsdorf H (2001) Ultrastructure and composition of asteroid bodies. Investigative Ophthalmology and Visual Science 42 (5), 902-907 PubMed.


ADDED