Sunday, January 15, 2006

ptosis (blepharoptosis, droopy lid)

Ptosis is the relaxation of the upper lid and narrowing of the palpebral fissure (opening between eyelids). Senile ptosis is most frequently caused by a decreased muscle tone and relaxation of the skin. Symptoms of senile ptosis include a decrease in the visual field, a foreign body sensation if the lashes are pushed onto the cornea (trichiasis), and the cosmetic aspect of a droopy eyelid.
Treatment involves surgical shortening of the levator palpebrae muscle of the upper eyelid. If the pupils are not covered by the eyelids, surgery may be delayed for a period of time.
Newell, F. W. Ophthalmology Principles and Concepts, 6th ed. St. Louis: C. V. Mosby Co. , 1986.
Slatt, B. J., and Stein, H. A. The Ophthalmic Assistant Fundamentals and Clinical Practice, 4th ed. St. Louis: C. V. Mosby Co., 1983.

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