Sunday, January 15, 2006

entropion (inward turning lid)

Entropion is the turning inward of the margin of the eyelid caused by a decrease in muscle tone and loss of fat around the eye in the elderly. This condition causes the lashes to irritate the eye, producing corneal epithelial defects (corneal scarring), conjunctival injection and tearing, which sometimes leads to a secondary infection of the cornea or conjunctiva. An entropion usually involves the lower lid. In the elderly this problem occurs as atonic, cicatricial, or spastic types. Symptoms of entropion include tearing and a foreign body sensation caused by the eyelashes rubbing against the eye. In minor cases temporary relief may be obtained by drawing the skin of the outer eyelid down by means of a strip of adhesive tape or by pulling the lashes. These methods have little long-term value. Surgical correction is often necessary and the procedure is usually performed on an outpatient basis.
Newell, F. W. Ophthalmology Principles and Concepts, 6th ed. St. Louis: C. V. Mosby Co., 1986.

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