Droopy Eyelid (Ptosis): Causes and Treatment

When one eye appears smaller, it becomes difficult to keep the eye open, or the upper eyelid constantly feels heavy, the problem may be more than cosmetic. A droopy eyelid, also known as ptosis, can affect vision, cause fatigue, and create noticeable asymmetry between the eyes.

Treatment depends on the cause. Before considering surgery, it is important to determine whether the problem is true eyelid ptosis, excess upper eyelid skin, or another condition involving the eyelids or eyebrows.

What causes a droopy eyelid?

The term can describe two different conditions.

Eyelid ptosis occurs when the upper eyelid margin sits lower than normal because the muscle responsible for lifting the eyelid has weakened or its tendon has stretched or become detached.

In other patients, the heavy appearance is mainly caused by excess upper eyelid skin, without a significant problem with the eyelid muscle itself.

Distinguishing between these conditions is important because they require different treatments.

Why does ptosis occur?

Ptosis may be present from birth or develop later in life. Possible causes include:

• Age-related changes

• Weakening or stretching of the levator muscle tendon

• Previous eye surgery or trauma

• Long-term contact lens use

• Neurologic or muscular conditions

In adults, one of the most common causes is gradual stretching or weakening of the tendon that connects the levator muscle to the eyelid.

When should a droopy eyelid be evaluated?

Evaluation may be recommended when the eyelid:

• Partially covers the pupil

• Reduces the upper visual field

• Causes you to constantly raise your eyebrows

• Produces forehead fatigue or tension

• Creates noticeable asymmetry between the eyes

• Interferes with everyday activities

In children, significant ptosis deserves particular attention because it can interfere with normal visual development.

Some situations require prompt evaluation. A suddenly drooping eyelid, particularly when accompanied by double vision, severe headache, eye pain, or a change in pupil size, should be assessed to rule out an underlying neurologic or ocular condition.

How is ptosis treated?

Treatment depends on the cause, severity of the drooping, and strength of the levator muscle.

Mild ptosis that does not affect vision may sometimes be observed.

When an underlying neurologic, muscular, or inflammatory disorder is responsible, treatment of that condition may be necessary before considering eyelid surgery.

When ptosis is structural and interferes with eyelid opening or the visual field, treatment is usually surgical. Depending on the type of ptosis, surgery may involve tightening or repositioning the levator muscle or using another technique designed to improve eyelid elevation.

Ptosis surgery or blepharoplasty?

They are not the same procedure.

Blepharoplasty primarily removes excess eyelid skin and, when appropriate, prominent fat pads.

Ptosis surgery corrects the position of the eyelid by addressing the mechanism responsible for lifting it.

Some patients require only one procedure, while others benefit from combining both. Performing blepharoplasty alone when true ptosis is present may leave the eyelid position inadequately corrected.

How do we determine whether surgery is necessary?

The decision cannot be made from a photograph alone.

During an evaluation, several factors are examined, including:

• Eyelid height and symmetry

• Levator muscle function

• Eyebrow position

• Ocular surface and tear film

• Eyelid closure

• Degree of visual field obstruction

It is also important to determine whether eyebrow descent or excess skin is contributing to the heavy appearance of the upper eyelids.

What can I expect from surgery?

Ptosis surgery is planned according to each patient’s anatomy and eyelid function.

The goal is to improve eyelid opening and, when vision is affected, restore the upper visual field while maintaining a natural eyelid position and adequate eye closure.

Swelling and bruising are common during the first few days and gradually improve. The final eyelid position becomes easier to evaluate as swelling resolves and the tissues heal.

Are there non-surgical treatments?

That depends on the diagnosis.

Certain inflammatory, neurologic, or muscular conditions may respond to medical treatment. However, when persistent ptosis is caused by a structural problem with the levator mechanism, surgery is generally the most effective definitive treatment.

Exercises, creams, and home remedies cannot repair a detached or weakened levator tendon or correct significant excess eyelid skin.

Why see an oculoplastic surgeon?

The eyelids do more than influence appearance. They protect the eyes, distribute the tear film, and play an important role in vision.

An oculoplastic evaluation considers eyelid position, visual function, ocular surface health, and periocular aesthetics together to identify the true cause of the problem and determine the most appropriate treatment.

In Dr. Andrés Lozano’s practice, ophthalmology and oculoplastic surgery are integrated to provide treatment focused on both function and natural-looking results.