Felis ISSN 2398-2950

Blindness

Contributor(s): Ruth Dennis, James Oliver, David Williams

Introduction

  • Cause:
    • Intra-ocular disease (congenital (eg severe microphthalmos, cataract), uveitis (numerous causes), cataract, glaucoma, retinal detachment, intra-ocular neoplasia, progressive retinal atrophy (eg in the Abyssinian), toxicity (eg enrofloxacin), dietary deficiency (eg taurine), trauma, hypertensive retinopathy with retinal detachment) is the most common.
    • Optic nerve disease (optic neuritis, optic nerve or perineural tumor, compression of optic nerve by retrobulbar space occupying lesion).
    • Intracranial disease (metabolic (eg lysosomal storage disease), hepatic encephalopathy, inflammatory disease, neoplasia, feline ischemic encephalopathy, consequence of cortical hypoxia, trauma)
  • It is important to localize where the lesion is occurring to target specific diagnostic procedures.
  • Signs: obvious blindness, pupil dilation.
  • Diagnosis: recognition of blindness, diagnosis of underlying disease.
  • Treatment: treat underlying cause when possible.
  • Prognosis: variable - may be reversible depending on cause.
    Print off the owner factsheet Living with a blind cat  Living with a blind cat  to give to your client.
Follow the diagnostic tree for Blindness Blindness.

Pathogenesis

Predisposing factors

General

Timecourse

  • Slow, progressive sight loss.
  • Acute or peracute blindness.

Diagnosis

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Treatment

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Prevention

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Gelatt K N (1998) Visual disturbance - where do I look? JSAP 38 (8), 328-335 PubMed.

Other sources of information

  • Petersen-Jones S & Crispin S (2002) BSAVA Manual of Small Animal Ophthalmology. 2nd edn. British Small Animal Veterinary Association. ISBN 0 905214 54 4


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