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Eyelash abnormalities
Introduction
Although ingrowing lashes are usually only a minor irritant they may cause permanent scarring of the cornea and threaten sight, especially if the cornea is insensitive or the eye is dry.
Classification:
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Trichiasis
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Distichiasis
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Trichiasis is a common, acquired, misdirection of eyelashes arising from their normal site of origin. Distichiasis is a rare, congenital growth of an extra row of eyelashes arising from the meibomian gland orifices in the posterior lid lamella. In both, the position of the lid margin is normal. If there is entropion of the lid margin this must be treated first (see Chapter 6 ) before treatment of the abnormal lashes.
Trichiasis
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