Felis ISSN 2398-2950

Distichiasis

Contributor(s): Dennis E Brooks, Peter Renwick, David Williams

Introduction

  • Rare in the cat.
  • Cause: hairs (adventitious cilia) emerge from the Meibomian ducts (or adjacent eyelid margin) to impinge on the cornea.
  • Signs: asymptomatic if only fine cilia-like hairs; thicker hairs cause corneal irritation   →   superficial keratitis Keratitis or corneal ulceration Ulcerative keratitis.
  • Diagnosis: signs.
  • Treatment: permanent cure requires destruction or removal of the hair root material.
  • Prognosis: good.

Pathogenesis

Pathophysiology

  • Hairs/adventitious cilia emerge from in or around the openings of the Meibomian glands along the eyelid margin.
  • If fine hairs, do not always contact the cornea; may just 'float' in the tear film on the cornea.
  • If thicker hairs   →   corneal irritation   →   superficial keratitis Keratitis   →   corneal ulceration   Ulcerative keratitis.

Timecourse

  • Juvenile.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers


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