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An eye disorder characterized by the misdirected inward growth of the eyelashes, causing trauma to the cornea.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the abnormal growth of eyelashes into the eyeball, which causes pain, lacrimation, and traumatic defects of the cornea. Trichiasis may be congenital or acquired as a result of scarring in the region of the hair follicles, for example, in trachoma and other diseases. It involves the lashes of one or both eyelids. Treatment includes the removal of the ingrown eyelashes, coagulation of the hair follicles by means of diathermy, and plastic surgery.


Zalkind, E. S. Bolezni volos. Leningrad, 1959.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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References in periodicals archive ?
Trichiasis is the sight-threatening consequence of conjunctival scarring in trachoma, the most common infectious cause of blindness worldwide.
About 0.81 million people have active trachoma.11 The high prevalence of trachoma was reported in Upper Sindh (96.6%) and high prevalence among female children (48.97%) and active trichiasis was 6.7% among adults female.12 WHO has recommended, The SAFE strategy, where S surgery for trichiasis, A antibiotic to reduce the reservoir of trachoma infection, F-facial cleanliness to limit transmission and Eenvironmental improvements to prevent recurrence of infection.
This family was reported recently to comprise about 300 genus and 10,000 species, which are used in folk medicine against the venomous bites and trichiasis and known as wart remover [1].
The common ophthalmic complications include dry eye syndrome, chronic conjunctivitis, trichiasis, corneal erosions, and symblepharon [20-22].
The clinic's ophthalmic nurse explained that she had a condition called trichiasis in which some of her eyelashes were growing inwards and scraping her cornea with every blink.
Especially in Insula 1 area 23, instruments used in the treatment of trichiasis were found.
The common eye complications observed in leprosy include lagophthalmos, impaired corneal sensation, exposure keratopathy, corneal ulceration, corneal opacity, cataract, iridocyclitis, ectropion, entropion, trichiasis, secondary glaucoma, iris atrophy and chronic dacryocystitis.
Repeated infection results in scarring of the eyelid and trichiasis (turning inward of the eyelashes, so that the eyelids scrape against the cornea).
Chronic ocular surface complications were broadly categorized into 3 groups: corneal (superficial punctate keratopathy, epithelial defect, loss of the palisades of Vogt, conjunctivalization, neovascularization, opacification, and keratinization); conjunctival (hyperemia, symblepharon formation); and eyelid (trichiasis, mucocutaneous junction involvement, meibomian gland involvement, and punctal damage) complications, according to the grading system for the evaluation of chronic ocular manifestations in patients with SJS established by Sotozono et al.
It can cause severe deformity by causing tissue destruction leading to symptoms like trichiasis, ectropion and painful red eye.3
Patients with a previous history of active ocular infection, ocular inflammation, pseudoexfoliation syndrome, rheumatoid arthritis, contact lens wear, corneal dystrophies, dry eyes, ocular trauma, ocular surgery, glaucoma, uveitis, corneal opacities, pterygium, trichiasis, entropion or patients having pan- retinal photocoagulation were excluded from this study.