trichiasis

trichiasis /tri·chi·a·sis/ (trĭ-ki´ah-sis)

1. a condition of ingrowing hairs about an orifice, or ingrowing eyelashes.

2. appearance of hairlike filaments in the urine.

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tri·chi·a·sis (tr-k-ss)

n.

A condition in which the hair adjacent to a natural opening turns inward and causes irritation, as in the inward turning of the eyelashes upon the eye.

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Trichiasis

A disease of the eye, in which the eyelashes, being turned in upon the eyeball, produce constant irritation by the motion of the lids.

Mentioned in: Lacrimal Duct Obstruction

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trichiasis

[trikī′əsis]

Etymology: Gk, thrix, hair, osis, condition

an abnormal inversion of the eyelashes that irritates the eyeball. It usually follows infection or inflammation. Compare ectropion.

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trichiasis

1. a condition of ingrowing hairs about an orifice, or ingrowing eyelashes.

2. the appearance of hairlike filaments in the urine.

Trichiasis. By permission from Slatter D, Textbook of Small Animal Surgery, Saunders, 2002

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caruncular trichiasis (1)

hairs growing from the lacrimal caruncle, particularly in brachycephalic dogs. Called also aberrant dermis.

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trichiasis 

A condition in which the eyelashes due to entropion, blepharitis or injury, are directed towards the globe and cause irritation of the cornea and conjunctiva. Temporary relief may be achieved with epilation but permanent treatment consists of cryotherapy or laser ablation or in severe cases surgical excision and replacement with a mucous membrane (Fig. T19). See distichiasis; epilation; therapeutic soft contact lens.

Fig. T19 Trichiasis