Ptosis (eyelid)
Ptosis (eyelid)
Ptosis (pronounced: /ˈtoʊsɪs/), also known as blepharoptosis, is a condition characterized by the drooping or falling of the upper eyelid. The condition can affect one or both eyes and is often due to aging, but can also be a symptom of other disorders affecting the muscles, nerves, or skin of the eyelids.
Etymology
The term "ptosis" originates from the Greek word "πτῶσις" meaning "falling" or "drooping". The term "blepharoptosis" combines "blepharon" (Greek for "eyelid") with "ptosis".
Causes
Ptosis can be caused by a variety of factors, including age-related changes in the muscles and skin of the eyelids, nerve disorders, muscle diseases, and trauma. It can also be present at birth, in which case it is known as congenital ptosis.
Symptoms
Symptoms of ptosis may include difficulty keeping the eyes open, eye strain, and reduced vision, particularly when looking upwards or while reading. In severe cases, it may be necessary to tilt the head back or lift the eyelid with a finger in order to see.
Treatment
Treatment for ptosis depends on the underlying cause. If the ptosis is due to aging, surgery may be required to tighten the levator muscle, which lifts the eyelid. If the ptosis is caused by a nerve or muscle disease, treating the underlying condition may improve the ptosis.
Related Terms
- Blepharoplasty: A surgical procedure to repair droopy eyelids by removing excess skin, muscle and fat.
- Levator muscle: The muscle in the eyelid that is responsible for lifting the eyelid.
- Myasthenia gravis: A chronic autoimmune neuromuscular disease that causes weakness in the skeletal muscles, which are responsible for breathing and moving parts of the body, including the eyes and eyelids.
External links
- Medical encyclopedia article on Ptosis (eyelid)
- Wikipedia's article - Ptosis (eyelid)
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