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Trichiasis

  • Kenneth V. Cahill
  • Jill A. Foster
Chapter

Abstract

Eyelashes play a protective role in keeping foreign material out of the eye. They emanate from the anterior edge of the rectangular lid margin. Each lash has a gently tapering shaft that arches anteriorly and away from the eyelid fissure. The lash follicles are approximately 2 mm deep in the upper lid and 1.75 in the lower lid. If a follicle becomes distorted in shape and/or orientation, the lash will grow with abnormal curvature or direction, defined as trichiasis. Lashes that touch the ocular surface can cause irritation, reflex epiphora, and abrasions which can lead to ocular surface infections, erosions, and scarring with temporary or permanent visual loss.

Keywords

Ocular Surface Meibomian Gland Freeze Cycle Cicatricial Pemphigoid Tarsal Plate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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    Camara JG, et al. Involutional lateral entropion of the upper eyelids. Arch Ophthalmol. 2002;120:1682.PubMedCrossRefGoogle Scholar
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    Ferreira IS, Bernardes TF, Bonfioli AA. Trichiasis. Semin Ophthalmol. 2010;25(3):66–71.PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.The Eye Center of ColumbusThe Ohio State UniversityColumbusUSA
  2. 2.Department of OphthalmologyThe Ohio State UniversityColumbusUSA

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