Eyelid and Eyelash Malpositions
The upper and lower eyelid structures are similar and analogous, yet distinct, each with a complex anatomy that allows the lids to retain form and function. Anatomic pathology of any cause can disrupt eyelid position, stability, and movement, thus allowing for a range of symptoms including tearing (epiphora), disruption in vision, conjunctival injection, keratopathy, or in extreme cases, corneal perforation. This chapter will briefly review eyelid anatomy, followed by an anatomically based discussion of the etiology and treatment of five common eyelid malpositions – ectropion, entropion, epiblepharon, ptosis, and retraction – as well as a brief review of trichiatic eyelashes.
KeywordsEyelid malposition Eyelash malposition Ectropion Entropion Epiblepharon Ptosis Eyelid retraction Trichiatic eyelashes
- AAO Basic and Clinical Science Course: Orbit, Eyelids and Lacrimal System.Google Scholar
- AAO Website: The Oculofacial Plastic Surgery Education Center http://www.aao.org/oculoplastics-center/oculoplastics-education-center.
- Callahan MA, Callahan A. Ophthalmic plastic and orbital surgery. Birmingham: Aesculapius Publishing Company; 1979.Google Scholar
- Tenzel RR. Orbit and Oculoplastics. In: Podos SM, Yanoff M, editors. Textbook of ophthalmology, vol. 4. New York: Gower Medical Publishing; 1993.Google Scholar