Equis ISSN 2398-2977

Cataract: congenital

Synonym(s): Lens opacity

Contributor(s): Sheryl Krohne

Introduction

  • By definition congenital cataracts are present at birth although a long delay may occur in their recognition.
  • Often bilateral - although not always equaly affected.
  • May occur as sole defect or exist with other problems, eg microphthalmia   Eyeball: microphthalmos  , posterior and anterior synechiae, persistent hyaloid vascular structures, retinal detachment aniridia or multiple ocular defects   Eye: defect - overview  .
  • Some workers consider congenital cataracts to be the most common neonatal ocular abnormality and cause of visual impairment.

Etiology

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Clinical Signs

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Diagnosis

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Treatment

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Control

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Gelatt K N (1993) Congenital and acquired ophthalmic disease in the foal. Anim Eye Res 1-2, 15-27.
  • Roberts S M (1992) Congenital ocular abnormalities. Vet Clin North Am Equine Pract 8, 456-487.
  • Beech J et al (1984) Congenital nuclear cataracts in the Morgan horse. JAVMA 184, 1363-1365.

Other sources of information

  • Brooks D E (1999) Equine Ophthalmology. In: Veterinary Ophthalmology. 3rd Ed Gelatt K N (ed) Lippincott, Williams and Wilkins. pp 1053-1117.
  • Barnett K C et al (1995) Equine Ophthalmology - color atlas and text. Mosby-Wolfe, UK.
  • Lavach J D (1990) Large animal ophthalmology. The C V Mosby Co, USA.
  • Blogg J R (1985) Eye examination of the performance horse. In: The eye in veterinary practice (Vol 2) Chilcote publishing, Australia.


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