Ptosis

Ptosis (from the Greek word πτῶσις "falling", "a fall", "dropped") is a drooping or falling of the upper eyelid. The drooping may be worse after being awake longer when the individual's muscles are tired. This condition is sometimes called "lazy eye", but that term normally refers to amblyopia. If severe enough and left untreated, the drooping eyelid can cause other conditions, like amblyopia or astigmatism. This is why it is especially important for this disorder to be treated in children at a young age, before it can interfere with vision development.

Causes

The most common causes of ptosis are: age-related weakening of the muscle, congenital weakness, or a neurological disorder. Ptosis can also be caused by a trauma, an adverse reaction to a drug, or an inflammatory or neurological condition.

Diagnosis

Diagnosis is made through a physical examination. The doctor will likely ask about symptoms and medical history. They may also order imaging tests, such as an MRI or CT scan, to see the muscles and nerves of the eyelid.

Treatment

Treatment depends on the type of ptosis and is usually performed by an ophthalmologist. Surgery is usually needed for congenital ptosis. If the ptosis is caused by a disease, that disease will need to be treated first.

See also

• Blepharoplasty
• Eyelid surgery
• Ophthalmology

References

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