ISSN 2398-2985      

Ocular dermoid

6guinea pig

Synonym(s): Dermoid cyst, Choristoma


Introduction

  • Cause: aberrant development of a dermal area, often haired, appearing on the cornea, conjunctiva or eyelides.
  • Signs: appearance of a haired area on the cornea, conjunctiva or eyelids.
  • Diagnosis: ophthalmic examination.
  • Treatment: simple removal by superficial keratectomy if corneal.
  • Prognosis: excellent; removal is curative.

Pathogenesis

Etiology

  • Aberrant growth of dermal tissue on the cornea or adnexa of the eye.
  • Dermoids are the same as in other mammals.
  • Unknown if there is any hereditary component as has been described in dogs for example.

Pathophysiology

  • Aberrant development of dermal tissue, usually on the cornea or adnexal tissue.
  • May be solitary or multiple.

Timecourse

  • Likely slow, but may go unnoticed until area is larger or causes eyelid movement problem.

Epidemiology

  • If there is a heritable factor, it has not been identified in guinea pigs.

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

Other sources of information

  • Williams D L (2012) The Guinea Pig Eye. In: Ophthalmology of Exotic Pets. Wiley-Blackwell. pp 56-72.

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