What Are the Causes of Ptosis?
Typically, Ptosis results from a weakening in the muscle responsible for raising the eyelid or from damage to the nerves that control the muscle. In some cases, Ptosis may simply be caused by loose skin on the upper eyelid. Sometimes, however, the reason for Ptosis is more troubling. In addition to the possibility of the disorder occurring as a congenital condition, or as a consequence of an injury or surgery, Ptosis may be caused by:
- Migraine headache
- Growth in the eyelid, such as a stye
- Bell’s palsy
- Myasthenia gravis
- Horner syndrome
- Benign or malignant tumor
In rare instances, Ptosis can occur due to a brain tumor or other malignancy that affects the reactions of muscles or nerves.
What Are the Symptoms of Ptosis?
Ptosis presents as the drooping of one or both eyelids and perhaps one or more of the following symptoms:
- Increased tear production
- Difficulty blinking or closing the eye
- Reduced vision (with severe drooping)
Since Ptosis caused by aging is usually gradual, a sudden onset of symptoms is a greater cause for concern.
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How is Ptosis Diagnosed?
Ptosis is typically diagnosed by an ophthalmologist, who can also frequently determine the cause of the problem. In order to perform a comprehensive eye examination, the doctor may test visual acuity, perform visual field testing, a slit-lamp examination, and, possibly, a tension test for myasthenia gravis.
If there is a suspicion of an underlying systemic disease, the patient will be referred to an internist or other physicians for further investigation.
How is Ptosis Treated?
Patients may seek treatment for droopy eyelids for cosmetic or medical purposes. Severe drooping may obstruct vision as the eyelid gradually droops lower and lower, eventually covering the eye. If Ptosis interferes with a patient’s vision, a blepharoplasty will be performed to eliminate the drooping. Many young patients with mild to moderate Ptosis should be examined regularly to check for other vision problems including amblyopia, refractive errors and muscular diseases.