Have you noticed that one of your eyelids seems to hang lower than the other? Or maybe you’ve been told you look tired, even when you’re not? You might be experiencing ptosis — a condition that’s more common than most people realize, and one that can affect people of all ages, from newborns to older adults.
Ptosis (pronounced “TOH-sis”) is the medical term for a drooping upper eyelid. While it can sometimes be a purely cosmetic concern, ptosis can also interfere with your vision, affect your eye health, and in some cases signal an underlying medical condition that needs attention.
At Valley Eyecare Center, our Phoenix eye doctors are experienced in identifying and evaluating ptosis as part of a comprehensive eye exam. In this guide, we cover everything you need to know — what ptosis is, what causes it, how it’s diagnosed, and what your treatment options look like.
What Is Ptosis?
Ptosis refers to the drooping or falling of the upper eyelid. In a normal eye, the upper eyelid sits just below the top of the iris (the colored part of the eye). When ptosis is present, the eyelid droops lower than it should — sometimes just slightly, sometimes enough to cover part or all of the pupil.
Ptosis can affect one eye (unilateral) or both eyes (bilateral). It can be present from birth or develop later in life. The severity ranges from barely noticeable to severe enough to significantly obstruct vision.
The condition occurs when the levator muscle — the muscle responsible for lifting the upper eyelid — is weakened, stretched, or not functioning correctly. Depending on the cause, ptosis may be temporary or permanent, and it may worsen over time if left untreated.
Types of Ptosis
There are several different types of ptosis, classified by their cause and when they develop:
Congenital Ptosis
Congenital ptosis is present from birth and occurs when the levator muscle doesn’t develop properly during fetal development. It affects one eye in most cases. If left untreated in children, congenital ptosis can lead to amblyopia (lazy eye) because the drooping lid prevents proper visual development. Early intervention is critical.
Aponeurotic Ptosis (Involutional Ptosis)
This is the most common form of ptosis in adults. It occurs when the levator aponeurosis — the tendon that connects the levator muscle to the eyelid — stretches or thins over time. It’s strongly associated with aging, but can also be caused by long-term contact lens wear, eye surgery, or frequent eye rubbing.
Neurogenic Ptosis
Neurogenic ptosis results from a problem with the nerve supply to the levator muscle. Conditions that can cause neurogenic ptosis include Horner syndrome, third nerve palsy, and myasthenia gravis. This type of ptosis often requires thorough medical evaluation to identify and treat the underlying neurological condition.
Myogenic Ptosis
Myogenic ptosis is caused by a disorder of the muscle itself, rather than the nerve. Conditions such as myasthenia gravis, oculopharyngeal muscular dystrophy, and chronic progressive external ophthalmoplegia (CPEO) can weaken the levator muscle and cause eyelid drooping.
Mechanical Ptosis
Mechanical ptosis occurs when the eyelid is weighed down by an external factor, such as a cyst, tumor, swelling, or excess skin. The eyelid muscle may be perfectly healthy, but the added weight prevents it from lifting the lid properly.
Traumatic Ptosis
Ptosis that develops following an injury to the eye, eyelid, or surrounding area is classified as traumatic ptosis. Damage to the levator muscle or its nerve supply from blunt force, lacerations, or surgical complications can all result in a drooping eyelid.
Common Causes of Ptosis
Understanding what causes ptosis can help you recognize risk factors and seek care at the right time. Here are the most common causes our Phoenix eye doctors see:
- Natural aging — The levator muscle and its tendon naturally weaken and stretch with age, making involutional ptosis one of the most common eye conditions in adults over 50.
- Long-term contact lens wear — Extended use of hard or rigid contact lenses can cause mechanical stretching of the levator aponeurosis over time.
- Eye surgery or procedures — LASIK, cataract surgery, and other eye procedures that require a speculum (a device that holds the eye open) can occasionally stretch the eyelid tissues and lead to post-surgical ptosis.
- Neurological conditions — Conditions affecting the nerves that control eyelid movement, including Horner syndrome, third cranial nerve palsy, and myasthenia gravis.
- Diabetes — Diabetic neuropathy can affect the nerves that control the eyelid muscles, leading to ptosis. This is another reason why regular eye exams are especially important for diabetic patients.
- Eye injury or trauma — Direct damage to the eyelid, levator muscle, or surrounding tissue.
- Tumors or growths — Masses on or near the eyelid can weigh it down or disrupt normal muscle function.
In some cases, ptosis is a symptom of a more serious systemic condition. If your ptosis appears suddenly or is accompanied by double vision, facial drooping, difficulty swallowing, or muscle weakness elsewhere in the body, seek medical attention promptly.
Recognizing the Symptoms of Ptosis
Ptosis symptoms can range from subtle to obvious. Here’s what to watch for:
- One or both upper eyelids visibly drooping or appearing lower than normal
- Eyes that appear asymmetrical or uneven
- Looking perpetually tired or sleepy, even when well-rested
- Difficulty keeping the eyes fully open, especially toward the end of the day
- Tilting the head back or raising the eyebrows frequently to see clearly under the drooping lid
- Eyebrow strain or forehead tension from compensating for the drooping lid
- Reduced field of vision, particularly in the upper visual field
- Eye fatigue or headaches caused by the extra effort required to keep the eye open
In children, signs to watch for include tilting the head backward, raising the chin, or frequently lifting their brows. Any of these compensatory behaviors in a child warrant a prompt eye exam.
How Is Ptosis Diagnosed?
Diagnosing ptosis begins with a thorough eye examination. During your visit to Valley Eyecare Center, our doctors will:
- Review your personal and family medical history
- Measure the margin reflex distance — the distance between the center of your pupil and the edge of your upper eyelid
- Assess levator muscle function by measuring how far the eyelid moves from looking down to looking up
- Examine the symmetry and position of both eyelids
- Evaluate your visual field to determine if the drooping lid is obstructing your vision
- Check for other associated symptoms that may suggest a neurological cause
In cases where a systemic or neurological condition is suspected, we may refer you to a specialist for additional testing, including imaging studies or blood tests. Our goal is always to identify not just the ptosis itself, but its underlying cause so the most appropriate treatment can be recommended.
Treatment Options for Ptosis
Treatment for ptosis depends on the severity of the condition, its underlying cause, and how much it is affecting your vision or quality of life. Here’s an overview of the available approaches:
Observation and Monitoring
In mild cases where ptosis is not affecting vision and is not caused by an underlying condition, your doctor may recommend monitoring rather than immediate treatment. Regular eye exams will track whether the condition is stable or progressing.
Treating the Underlying Cause
When ptosis is caused by a systemic condition such as myasthenia gravis or Horner syndrome, treating that underlying condition may improve or resolve the eyelid drooping. In these cases, your eye doctor will work closely with your primary care physician or a neurologist.
Ptosis Crutches
For patients who are not candidates for surgery or prefer to avoid it, ptosis crutches are a non-surgical option. These are small attachments fitted to the bridge of eyeglass frames that physically support the drooping eyelid. While not a cure, they can be an effective and immediate solution for improving the visual field.
Surgical Correction
Surgery is the most definitive treatment for ptosis and is recommended when the condition is affecting vision, causing significant cosmetic concerns, or interfering with daily life. The most common surgical approach is levator resection, which tightens and shortens the levator muscle to lift the eyelid to the correct position.
For cases where the levator muscle is very weak or non-functional (common in congenital ptosis), a frontalis sling procedure may be performed. This technique attaches the eyelid to the frontalis muscle in the forehead, allowing the patient to use their brow to lift the lid.
Ptosis surgery is typically performed by an oculoplastic surgeon — a specialist in surgery involving the eyelids, orbit, and surrounding facial structures. Valley Eyecare Center can provide referrals to trusted surgical specialists in the Phoenix area when surgery is the recommended course of action.
Pediatric Ptosis Treatment
Children with ptosis require prompt attention because the condition can interfere with normal visual development. Treatment may include patching the stronger eye to encourage use of the affected eye, along with surgical correction. The timing and approach depend on the severity of the ptosis and the child’s age.
When Should You See an Eye Doctor About a Drooping Eyelid?
You should schedule an eye exam if:
- You or your child has a noticeably drooping eyelid that has appeared or worsened recently
- The drooping lid is affecting your ability to see clearly
- You notice asymmetry between your two eyelids that wasn’t there before
- You’re experiencing headaches, brow strain, or neck discomfort from compensating for the drooping lid
- The ptosis appeared suddenly, or is accompanied by other neurological symptoms such as double vision, facial weakness, or difficulty swallowing
Even if your ptosis seems mild, it’s always worth having it evaluated. Early detection of an underlying cause can make a significant difference in your long-term eye health and overall wellbeing.
Frequently Asked Questions About Ptosis
Q: Is ptosis the same as a lazy eye?
A: No — ptosis and lazy eye (amblyopia) are different conditions, though they can be related. Ptosis refers specifically to a drooping upper eyelid caused by muscle or nerve issues. Amblyopia is a condition where the brain favors one eye over the other, leading to reduced vision in the weaker eye. However, in children, untreated ptosis can cause amblyopia because the drooping lid blocks visual input to the developing eye.
Q: Can ptosis go away on its own?
A: It depends on the cause. Ptosis caused by temporary swelling, allergic reactions, or mild trauma may resolve on its own. However, ptosis caused by muscle weakness, aging, or nerve problems is unlikely to improve without treatment. If you notice your eyelid drooping, it’s best to have it evaluated rather than waiting to see if it resolves.
Q: Is ptosis surgery covered by insurance?
A: In many cases, yes — if ptosis is obstructing your vision, it may be classified as a medically necessary procedure and covered by health insurance. Purely cosmetic ptosis correction may not be covered. Your eye doctor can document the functional impact of your ptosis to support an insurance claim. We recommend checking with your insurance provider for specific coverage details.
Q: Can wearing contact lenses cause ptosis?
A: Yes, long-term contact lens wear — particularly rigid or hard lenses — has been associated with acquired ptosis in some patients. The repeated mechanical stress of inserting and removing lenses can stretch the levator aponeurosis over time. Switching to soft lenses or glasses may help slow the progression, but existing ptosis is unlikely to reverse on its own.
Q: Can ptosis affect both eyes at the same time?
A: Yes. Bilateral ptosis (affecting both eyes) is less common than unilateral ptosis but does occur. It is more commonly associated with systemic conditions such as myasthenia gravis or muscular dystrophies, and warrants a thorough evaluation to rule out these underlying causes.
Q: At what age is ptosis surgery safe for children?
A: The timing of ptosis surgery in children depends on how severely the drooping lid is affecting vision and visual development. If ptosis is significantly blocking the visual axis and risking amblyopia, surgery may be recommended in infancy or early childhood. In less severe cases, surgery may be deferred until the child is older. Your eye doctor and the surgical team will determine the most appropriate timing based on your child’s individual situation.
Q: Will ptosis get worse over time?
A: In many cases, yes — particularly with age-related (involutional) ptosis, the condition tends to gradually worsen over time as the levator muscle and tendon continue to weaken. Regular monitoring through annual eye exams allows your doctor to track any changes and recommend treatment at the right time.
Think You Might Have Ptosis? Let’s Take a Look.
Whether you’ve just started noticing a slight droop or you’ve been dealing with it for years, a comprehensive eye exam at Valley Eyecare Center is the best first step. Our Phoenix eye doctors will evaluate your eyelid function, assess any impact on your vision, and guide you toward the right treatment options for your situation.
We serve patients across the Phoenix area from our two convenient locations. Don’t ignore a drooping eyelid — in many cases, early evaluation leads to better outcomes and more treatment options.
Call our Northern Ave. office at 602-242-6888 or our 44th Street office at 602-955-2700, or visit valleyeyecareaz.com to schedule your appointment online. We’re here to help you see — and look — your best
