ISSN 2398-2950      

Trichiasis

ffelis

Introduction

  • Cause: normal facial hair (usually from the eyelid) is abnormally angled so that it contacts the cornea .
  • Occasionally seen in Persians with prominent nasal folds and medial lower lid entropion.
  • Can also result from eyelid scarring   →   lid distortion and lid colobomas and lid neoplasia Eyelid and conjunctiva: neoplasia (especially squamous cell carcinoma Squamous cell carcinoma).
  • Signs: red eye, ocular discharge, ocular pain, corneal ulceration.
  • Diagnosis: history, signs.
  • Treatment: surgical.
  • Prognosis: good-fair. Recurrence possible.

Pathogenesis

Etiology

  • Prominent nasal folds.
  • Iatrogenic (previous eyelid surgery causing lid distortion)   →   scarring.
  • Eyelid injury   →   scarring Eyelid: laceration.
  • Eyelid coloboma   →   abnormal eyelid margin.

Predisposing factors

General

  • Prominent nasal folds.

Pathophysiology

  • Persians: prominent nasal folds   →   corneal irritation   →   superficial keratitis Ulcerative keratitis (often secondary sequestrum formation).
  • Cicatricial: previous eyelid scarring (often iatrogenic)   →   lid distortion   →   trichiasis.

Diagnosis

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Dziezyc J & Millichamp N J (1989) Surgical correction of eyelid agenesis in a cat. JAAHA 25 (5), 513-516 VetMedResource.
  • Bellhorn R W, Barnett K C & Henkind P (1971) Ocular colobomas in domestic cats. JAVMA 159 (8), 1015-1021 PubMed.

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!