It is a drooping or falling of the upper eyelid, and may occlude the pupil and interfere in vision.
It is usually caused by a malfunction of the eyelid levator muscle. This may be caused by:
Aponeurotic causes: it is the most common cause and it is due to the own aging of tissues, in particular the aponeurosis of the levator muscle.
Neurogenic: Failure of nervous stimulation of the levator muscle.
Mechanics: Cysts or tumors in the upper eyelid that cause its drooping due to weight.
Myogenic: Due to muscular alterations.
The eyelids falls and can totally or partially occlude the vision, modify the visual acuity, reduce the field of vision, cause headaches, and muscle spasms in the neck due to the need of constantly lifting up the chin to improve vision, etc.
It is always surgical. It is intended to repair the levator muscle and return to the eyelid to an appropriate height. There are different surgical techniques and their indication depends on the etiology and the findings after examinations. It is performed under local anesthesia and sedation in an outpatient basis. The skin incisions are made in the skin folds, always seeking the best aesthetic possible results.