Ptosis is an age-related challenge caused by a weakening of the muscles responsible for lifting the eyelids. As a result of this weakness, either one or both of the upper eyelids droop. The degree of the droop may be mild to severe, with severe ptosis leading to functional vision loss and tension headaches from straining to raise the eyelids.  While most cases of ptosis are due to the natural aging process, other causes of ptosis among adults may be:

A side effect of eye surgery (i.e. cataract surgery), Graves' Disease, Diabetes, Congenital ptosis, Myasthenia gravis, Cranial nerve disorders, Stroke, Strabismus, Facial nerve disorders, Orbital disorders, Tumor, Chronic inflammation and Trauma. 

Determining the cause of the ptosis is an important first step before an effective treatment strategy can be identified.   If the ptosis cannot be resolved via treatment of an underlying disorder, then ptosis surgery to tighten the muscles responsible for lifting the eyelids may be appropriate to improve the field of vision or create a more youthful appearance.