Why Is My Eyelid Drooping? The Short Answer
A drooping eyelid can have several causes. In some cases, it is due to the natural ageing of the tissues, while in others it may be related to a problem affecting the muscle that lifts the eyelid, its tendon or the nerves that control its movement.
The medical term for drooping of the upper eyelid is eyelid ptosis, also known as blepharoptosis.
It may affect:
- One eye only.
- Both eyes.
- From birth.
- Progressively during adulthood.
- Suddenly.
When the drooping is mild, it may mainly be a cosmetic concern. However, if the eyelid falls far enough to cover part of the pupil, it can reduce the upper visual field and make activities such as reading, driving or maintaining your gaze for long periods more difficult.
If the eyelid droops suddenly, especially alongside double vision, headache, changes in the pupil, facial weakness or difficulty moving the eye, urgent medical assessment is required.
What Exactly Is Eyelid Ptosis?
Eyelid ptosis is an abnormal drooping of the upper eyelid.
The upper eyelid is lifted mainly by the levator muscle. This muscle is attached to the eyelid by a tendon-like structure called the levator aponeurosis.
Other structures also play a part:
- Müller’s muscle.
- The nerves that control eyelid opening.
- The tissues that support the eyelid.
- The frontalis muscle in the forehead.
If any of these structures does not work properly, the eyelid may sit lower than usual.
Ptosis may be barely noticeable or may partially cover the pupil. In more severe cases, the eyelid can significantly obstruct vision.
Is a Drooping Eyelid the Same as Excess Skin?
Not necessarily.
A drooping eyelid and excess upper-eyelid skin are different problems, although they can occur together.
Eyelid Ptosis
With ptosis, the edge of the upper eyelid itself droops. The eye opens less than normal and the eyelid may cover part of the pupil.
Dermatochalasis
Dermatochalasis is excess skin on the upper eyelid. This skin may form a heavy fold and hang over the eyelashes, while the eyelid margin itself remains in a normal position.
Brow Drooping
In some patients, the feeling of a heavy eyelid is actually caused by a drooping brow. As the brow descends, the forehead tissues push the upper-eyelid skin downwards.
The same person may have:
- Eyelid ptosis.
- Excess skin.
- Brow drooping.
- A combination of all three problems.
It is important to distinguish between them because they are not corrected by the same procedure. Blepharoplasty removes excess skin, but it does not always correct true eyelid ptosis.
Main Causes of a Drooping Eyelid
1. Ageing of the Eyelid Tissues
The most common cause of acquired ptosis in adults is ageing.
Over time, the levator aponeurosis may stretch, weaken or become partially detached from the eyelid.
The muscle may still work, but its force is no longer transmitted effectively to the eyelid margin.
This type of ptosis will usually:
- Develop gradually.
- Become more noticeable towards the end of the day.
- Affect one or both eyes.
- Be accompanied by a higher-than-usual eyelid crease.
- Occur alongside excess upper-eyelid skin.
Although it is more common with age, it should not be considered purely cosmetic. If the eyelid covers part of the pupil, it can reduce the visual field.
2. Congenital Ptosis
Congenital ptosis is present from birth or is identified during the first months or years of life.
It is usually caused by underdevelopment of the muscle responsible for lifting the eyelid.
It may affect one or both eyes.
Some children with ptosis:
- Constantly raise their eyebrows.
- Furrow their forehead to open their eyes more widely.
- Tilt their head backwards.
- Have a visible difference between the two eyelids.
- Have difficulty developing normal vision.
When the eyelid covers the visual axis, it can interfere with visual development and contribute to amblyopia, commonly known as a lazy eye.
For this reason, ptosis in children should be assessed by an ophthalmologist, even if it appears to be purely cosmetic.
3. Weakening or Detachment of the Levator Tendon
In addition to ageing, the levator aponeurosis may be damaged or weakened for other reasons.
These changes include:
- Previous eye surgery.
- Eye injuries.
- Persistent inflammation.
- Repeated manipulation of the eyelid.
- Long-term use of certain contact lenses.
In these cases, the eyelid may gradually droop over time.
4. Long-Term Contact Lens Use
Contact lens use, particularly when the upper eyelid is repeatedly handled to insert and remove the lenses, may contribute to stretching of the eyelid tissues.
This does not mean that everyone who wears contact lenses will develop ptosis.
However, when a contact lens wearer develops progressive eyelid drooping, the ophthalmologist will consider:
- The type of lens worn.
- How many years the lenses have been worn.
- The insertion and removal technique.
- Any chronic irritation or inflammation.
5. Previous Eye Surgery
In some cases, ptosis can develop after eye surgery.
It may be associated with:
- Inflammation after the procedure.
- Manipulation of the eyelid during surgery.
- The use of eyelid speculums.
- A pre-existing problem that becomes more noticeable after the operation.
Some cases of eyelid drooping after surgery are temporary and improve over the following months. Others persist and require specific treatment.
6. Trauma
A blow, injury or surgery involving the eyelid area may affect:
- The levator muscle.
- Its aponeurosis.
- The nerves that control the eyelid.
- The structure of the eyelid itself.
Traumatic ptosis may appear immediately after the injury or become apparent once the swelling subsides.
7. Neurological Conditions
The nerves that control the eyelid muscles can be affected by certain neurological conditions.
In these cases, a drooping eyelid may be accompanied by other symptoms, such as:
- Double vision.
- Difficulty moving one eye.
- A difference in pupil size.
- Headaches.
- Pain around the eye.
- Weakness on one side of the face.
Neurological ptosis may be associated with third cranial nerve disorders or Horner syndrome, among other causes.
These situations require specific assessment to identify the underlying cause.
8. Myasthenia Gravis
Myasthenia gravis is a condition that affects communication between the nerves and muscles.
Ptosis associated with myasthenia can have a distinctive feature: it varies throughout the day.
The eyelid may be more open in the morning and gradually droop after visual effort or towards the end of the day.
It may also:
- Switch from one eye to the other.
- Affect both eyelids.
- Be accompanied by double vision.
- Improve after rest.
When eyelid drooping varies considerably, the specialist may request additional tests to rule out a neuromuscular cause.
9. Eyelid Lumps, Cysts or Tumours
The weight of a lesion on the eyelid can cause it to droop.
This is known as mechanical ptosis.
It may be caused by:
- Cysts.
- Inflammation.
- Scarring.
- Benign tumours.
- Malignant tumours.
- Abnormal tissue deposits.
Any lesion that grows, changes in appearance, bleeds or alters the position of the eyelashes should be assessed by a specialist.
10. Eyelid Swelling or Inflammation
A swollen eyelid may appear droopy even when the levator muscle is working normally.
This may occur with:
- Allergy.
- Blepharitis.
- Stye.
- Chalazion.
- Infections.
- Orbital inflammation.
As the inflammation subsides, the eyelid usually returns to its normal position. If the drooping persists, true ptosis will need to be ruled out.
11. Facial Palsy
Facial palsy mainly affects eye closure and the position of the lower eyelid, but it can also alter the symmetry of the brow and the tissues around the eyes.
A drooping brow can increase the feeling of heaviness over the upper eyelid.
In these patients, it is particularly important to assess:
- The ability to close the eye fully.
- The health of the cornea.
- The position of the brow.
- The position of the lower eyelid.
- Facial symmetry.
Treatment may have both functional and cosmetic aims.
Why Is Only One Eyelid Drooping?
Ptosis may affect only the right eye or the left eye.
When only one eyelid droops, possible causes include:
- Asymmetrical ageing of the tissues.
- Unilateral congenital ptosis.
- A previous injury.
- Eye surgery.
- A localised lesion.
- A neurological disorder.
- Myasthenia gravis.
Asymmetry alone does not indicate whether the problem is mild or serious.
The important points to assess are:
- When it began.
- Whether it developed gradually or suddenly.
- Whether it varies throughout the day.
- Whether there is double vision.
- Whether the pupils are different sizes.
- Whether there is pain or difficulty moving the eye.
Why Are Both Eyelids Drooping?
Bilateral drooping may develop as the tissues of both eyelids age, but it may also have a muscular, neuromuscular or congenital cause.
When both eyes are affected, it may cause:
- A constantly tired appearance.
- A feeling of heaviness in the eyelids.
- The need to raise the eyebrows.
- Pronounced forehead lines.
- Difficulty seeing the upper part of the visual field.
- Eye strain when reading.
Even if both eyelids appear similar, one may sit slightly lower than the other.
Why Does the Eyelid Droop More at the End of the Day?
The appearance of the eyelids may change as the day progresses.
Tiredness can make existing ptosis more noticeable, particularly after many hours of visual effort.
However, a marked change during the day may also suggest a neuromuscular disorder.
You should seek medical advice if:
- The eyelid gradually droops over the course of the day.
- It improves noticeably after rest.
- The drooping switches from one eye to the other.
- Double vision develops.
- There is difficulty speaking, chewing or swallowing.
What Symptoms Can Ptosis Cause?
In addition to visible eyelid drooping, ptosis may cause:
- A reduced upper visual field.
- Difficulty reading.
- Difficulty driving.
- A feeling of heaviness in the eyelids.
- Eye strain.
- Forehead pain.
- The need to keep raising the eyebrows.
- Tilting the head backwards.
- Facial asymmetry.
- Self-consciousness about appearance.
Some people are unaware that they are constantly contracting the forehead muscle to keep their eyes open.
This effort can cause forehead discomfort, a feeling of tension and tiredness by the end of the day.
When Is a Drooping Eyelid an Emergency?
Ptosis that has developed slowly can usually be assessed at a scheduled appointment.
However, you should seek urgent medical attention if the eyelid droops suddenly and is accompanied by:
- Double vision.
- Difficulty moving the eye.
- One pupil being larger or smaller than the other.
- A severe headache.
- Eye pain.
- Loss or reduction of vision.
- Facial weakness.
- Difficulty speaking.
- Weakness in an arm or leg.
- A recent injury.
Sudden eyelid drooping should not be attributed to tiredness alone until other causes have been ruled out.
When Should a Drooping Eyelid Be Assessed in a Child?
Every child with a drooping eyelid should have an ophthalmic examination.
Assessment is particularly important if:
- The eyelid covers part of the pupil.
- The child constantly raises their eyebrows.
- The child tilts their head backwards to see.
- There is a difference in prescription between the two eyes.
- One eye turns.
- The drooping appears to be worsening.
The aim is not only to assess the appearance of the eyelid, but also to check that vision is developing normally.
How Is the Cause of a Drooping Eyelid Diagnosed?
To assess ptosis, the ophthalmologist examines both the position of the eyelid and how it functions.
The assessment may include:
- A full medical history.
- When the drooping began.
- Comparison with older photographs.
- Measurement of the height of both eyelids.
- Assessment of levator muscle function.
- Examination of the upper-eyelid crease.
- Assessment of eye movements.
- Examination of the pupils.
- Visual field assessment.
- Examination of the ocular surface.
- Checking whether the eyes can close fully.
- Assessment of the brow and excess skin.
The specialist will also assess whether the drooping changes with tiredness or after sustained upward gaze.
In certain cases, the following may be requested:
- Neurological tests.
- Blood tests.
- Specific tests for neuromuscular conditions.
- CT scan.
- MRI scan.
- Visual field tests.
Not every patient needs the same tests. The initial examination helps determine which investigations are appropriate.
How Is a Drooping Eyelid Treated?
Treatment depends on:
- The cause of the ptosis.
- The patient’s age.
- The severity of the drooping.
- Levator muscle function.
- The effect on the visual field.
- The ability to close the eye.
- The presence of other eyelid problems.
| Cause | Possible treatment |
| Ageing or weakening of the tendon | Surgery to adjust or strengthen the levator muscle |
| Congenital ptosis | Monitoring or surgery depending on vision and muscle function |
| Myasthenia gravis | Treatment of the neuromuscular condition |
| Neurological disorder | Treatment of the cause and multidisciplinary assessment |
| Trauma | Observation, repair or surgery depending on the damage |
| Eyelid lump or lesion | Investigation and treatment of the lesion |
| Temporary inflammation | Treatment of the inflammation |
| Excess skin without true ptosis | Blepharoplasty when appropriate |
What Does Ptosis Surgery Involve?
Ptosis surgery aims to lift the upper eyelid to a more suitable position.
Different techniques may be used depending on the cause and the strength of the muscle.
Levator Muscle Repair or Advancement
When the muscle still functions well but its tendon is stretched or detached, it can be adjusted so that its force is transmitted more effectively to the eyelid.
This technique is usually performed through an incision in the natural crease of the upper eyelid.
Surgery from the Inner Surface of the Eyelid
For certain types of ptosis, correction can be performed through the conjunctiva, with no visible skin incision.
The choice depends on the patient’s individual features and how the eyelid responds during examination.
Frontalis Suspension
When levator muscle function is very limited, the eyelid can be connected to the frontalis muscle.
This allows the patient to use the forehead to help lift the eyelid.
This technique is used particularly for some congenital or neuromuscular cases of ptosis.
Are Ptosis Surgery and Blepharoplasty the Same?
No.
Ptosis surgery addresses the mechanisms that lift the eyelid.
Blepharoplasty removes or redistributes excess skin and, in some cases, other eyelid tissues.
A person may need:
- Ptosis correction alone.
- Blepharoplasty alone.
- Both procedures during the same operation.
- Additional brow correction.
Performing blepharoplasty alone in a patient with undiagnosed ptosis may not correct the asymmetry or adequately improve eye opening.
This is why assessment by a specialist in eyelid surgery and oculoplastics is important.
When Should a Drooping Eyelid Be Operated On?
Surgery may be recommended when:
- The eyelid covers part of the pupil.
- There is loss of the upper visual field.
- The eyebrows need to be raised constantly.
- Headaches or forehead fatigue develop.
- The drooping makes reading or driving difficult.
- There is asymmetry that concerns the patient.
- The ptosis affects a child’s visual development.
The decision does not depend only on how far the eyelid has drooped. Muscle function, eye closure, corneal health and the patient’s expectations are also taken into account.
What Is Recovery Like After Ptosis Surgery?
Recovery depends on the technique used and each patient’s individual circumstances.
During the first few days, you may experience:
- Inflammation.
- Bruising around the eyes.
- A feeling of tightness.
- Temporary asymmetry.
- Mild difficulty closing the eye fully.
- Tenderness or discomfort in the treated area.
The position of the eyelid may change as the swelling subsides.
For this reason, the final result should not be assessed during the first few days.
Follow-up visits allow the specialist to check:
- The height of the eyelid.
- The symmetry between both eyes.
- The curve of the eyelid margin.
- The ability to close the eye.
- The condition of the ocular surface.
Can the Eyelid Droop Again After Surgery?
Ptosis surgery can provide lasting functional and cosmetic improvement, but the tissues continue to age over time.
In some cases, there may be:
- Recurrent drooping years later.
- Insufficient eyelid height.
- Excessive elevation.
- Differences between the two eyelids.
- An irregular eyelid contour.
Some situations require a second procedure to fine-tune the result.
Eyelid anatomy is highly precise, and absolute symmetry cannot always be guaranteed.
Can a Drooping Eyelid Be Corrected Without Surgery?
It depends on the cause.
When the drooping is caused by inflammation, a neuromuscular condition or a temporary problem, treating the underlying cause may improve the eyelid position.
However, when the levator tendon is stretched or detached, definitive treatment is usually surgical.
Facial exercises, massage and creams cannot reattach the tendon or correct structural ptosis.
Frequently Asked Questions About Drooping Eyelids
What Is the Medical Term for a Drooping Eyelid?
It is called eyelid ptosis or blepharoptosis. It is an abnormal drooping of the upper eyelid.
Why Has My Eyelid Drooped with Age?
With ageing, the tendon of the muscle that lifts the eyelid may stretch or partially detach. This is one of the most common causes of acquired ptosis in adults.
Can Tiredness Make the Eyelid Droop?
Tiredness can make existing asymmetry more noticeable. If the drooping varies greatly during the day or improves clearly after rest, a neuromuscular disorder should be ruled out.
Can a Drooping Eyelid Affect Vision?
Yes. When it covers part of the pupil, it can reduce the upper visual field and make activities such as reading or driving more difficult.
Can a Drooping Eyelid Be a Neurological Symptom?
In some cases, yes. Sudden drooping accompanied by double vision, pupil changes, headache or difficulty moving the eye requires urgent assessment.
Does a Drooping Eyelid Always Require Surgery?
No. Treatment depends on the cause, severity and functional impact. Some mild cases can be monitored, while others improve when the underlying condition is treated.
Does Blepharoplasty Correct Ptosis?
Not necessarily. Blepharoplasty removes excess skin, while ptosis surgery acts on the mechanism that lifts the eyelid. In some patients, the two techniques are combined.
Can Ptosis Develop After Cataract Surgery?
Yes. It can develop after certain eye operations. Some postoperative cases of ptosis improve over time, while others require correction.
Can Contact Lenses Cause Eyelid Drooping?
Long-term wear and repeated manipulation of the eyelid may contribute to weakening of the tissues in some people.
Is It Dangerous to Have a Drooping Eyelid from Birth?
It can affect visual development if it covers the pupil or causes an unequal prescription. This is why it should be assessed during childhood.
Which Specialist Treats Eyelid Ptosis?
An ophthalmologist specialising in oculoplastics assesses eyelid function, distinguishes ptosis from other causes of eyelid heaviness and determines the most appropriate treatment.
A Specialist Assessment Can Identify the Cause
A drooping eyelid does not always have the same cause. It may be due to ageing, a congenital problem, previous surgery, trauma or, less commonly, a muscular or neurological condition.
It is also important to distinguish true ptosis from excess skin and brow drooping.
At Centro Oftalmológico del Llano, we carry out a comprehensive assessment of the eyelids and visual function to identify the cause of the problem and clearly explain the available options.
Eyelid surgery may have a functional or cosmetic aim, or combine both. Treatment should be tailored to each patient’s anatomy, needs and expectations.
