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An eye disorder characterized by the misdirected inward growth of the eyelashes, causing trauma to the cornea.



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.
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Jallow's case of trichiasis was the result of something that happened decades before--when she was a child living in a rural village, Jallow was infected with the bacterium Chlamydia trachomatis and developed trachoma.
The outcome of trachomatous trichiasis surgery in Ethiopia: risk factors for recurrence.
The astigmatism found in leprosy could be due to corneal opacity, keratitis, trichiasis, entropion, ectropion and others as seen in Figure 2.
Slit lamp examination was conducted to rule out dry eyes, corneal opacities, uveitis, entropion and trichiasis.
Diseases such as exophthalmos, lagophthalmos, medial corner entropion, nasal trichiasis, distichiasis, changes in tear production and keratopathy by exposure are cited.
Those with advanced trachomatous complications like trichiasis and corneal opacity were excluded.
SAFE is an acronym for Surgery for trichiasis (inverted eyelashes), Antibiotics, Facial cleanliness and Environmental improvement.
Number of % patients Age (years) <20 3 6 21-39 25 49 40-64 14 27 >65 9 18 Sex Male 29 57 Female 22 43 Risk factors Contact lens wear 23 45 Foreign body 6 12 Recurrent corneal erosion 5 10 Corneal graft 4 8 Skin condition 2 4 Exposure keratopathy 2 4 Bullous keratopathy 1 2 Herpetic keratitis 1 2 Neurotrophic ulcer 1 2 Ocular trauma 1 2 Trichiasis 1 2 No risk factor 4 8 Table 2: Organisms isolated and predisposing factors in patients with microbial keratitis cases treated at a university hospital in Hong Kong between 2012 and 2014.
SAFE refers to Surgery, Antibiotics, Facial cleanliness, and Environmental improvements, specifically, surgery to correct trichiasis (in-turned eyelashes), oral antimicrobial drugs to treat Chlamydia trachomatis infections, facial cleanliness to decrease ocular infections, and environmental improvements such as latrines and wells to provide clean water.
Entropion, trichiasis and dystichiaisis can cause abrasion of corneal epithelium.
Patients with Entropion Ectropion Trichiasis or using Cortico-steroids drugs were excluded from the study.
These follicular changes make the eyelash more brittle and can lead to madarosis (lash loss), misalignment, or trichiasis (lash abrasion of cornea).