is drooping of the upper eyelid. The lid may droop only slightly or it may
cover the pupil entirely. In some cases ptosis can restrict and even block
ptosis, or ptosis that is present at birth, requires treatment for normal
visual development. Uncorrected congenital ptosis can cause amblyopia, or lazy
eye. If left untreated, amblyopia can lead to permanently poor vision.
in mild cases, the treatment for childhood ptosis is usually surgery to tighten
the levator muscle that lifts the eyelid. In severe ptosis, when the levator
muscle is extremely weak, the lid can be attached or suspended from under the
eyebrow so the forehead muscles do the lifting. Children with ptosis, whether
they have had surgery or not, should be examined annually by an ophthalmologist
for amblyopia, refractive disorders, and associated conditions.
in adults is commonly caused by separation of the levator muscle from the
eyelid as a result of aging, cataract or other eye surgery, an injury, or an
eye tumor. Adult ptosis may also occur as a complication of other diseases
involving the levator muscle or its nerve supply, such as diabetes.
treatment is necessary, it is usually surgical. Sometimes a small tuck in the
levator muscle and eyelid can raise the lid sufficiently. More severe ptosis
requires reattachment and strengthening of the levator muscle.
risks of ptosis surgery include infection, bleeding, and reduced vision, but
these complications occur very infrequently. Although improvement of the lid
height is usually achieved, the eyelids may not appear perfectly symmetrical.
In rare cases, full eyelid movement does not return.