Cataract

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Sections available in full article Introduction, Presenting signs, Breed predisposition, Pathogenesis, Etiology, Pathophysiology, Timecourse (incubation, duration), Diagnosis, Presenting problems, Client history, Diagnostic investigation, Confirmation of diagnosis, Differential diagnosis, Treatment, Initial symptomatic treatment, Sources, Publications, Vetstream contributor(s),
Contributors Dr Paul Gerding DVM MS DipACVO

Introduction

  • Important cause of visual disability.
  • Cause : inherited (juvenile or later onset), or secondary to systemic disease, eg diabetes, or ocular abnormality, eg uveitis or progressive retinal atrophy.
  • Signs : ocular opacity.
  • Treatment : surgery.
  • Prognosis : good following surgical removal of lens (with or without intra-ocular lens implantation).
    Print off the owner factsheet on Cataract Cataract to give to your client.

Diagnosis

Differential diagnosis

  • Corneal opacity:
    • Edema.
    • Lipid.
    • Scar.
  • Nuclear sclerosis - older animals, does not compromise vision, retina visible but concentric rings of cortex.

Sources

Publications

Refereed papers

  • Adkins E A & Hendrix D V H (2005) Outcomes of dogs presented for cataract evaluation: a retrospective study. JAAHA 41 , 235-240 PubMed.
  • Denis H M, Brooks D E, Alleman A R, Andrew S E & Plummer C (2003) Detection of anti-lens crystallin antibody in dogs with and without cataracts. Vet Ophthalmol. 6 (4), 321-327.PubMed
  • Williams D L, Boydell I P & Long R D (1996) Current concepts in the management of canine cataract. Vet Rec 138 , 347-353 (Useful resume of pre-operative assessment, surgical methods, potential problems).

Other sources of information

  • Nasisse M P & Davidson M B (1999) Surgery of the lens. In: Veterinary Ophthalmology.3rd edn. Lippincott, Williams & Wilkins. pp 827-856.

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