Droopy Eyelid (Ptosis) Surgery in Singapore

Ptosis is the medical term for a drooping upper eyelid. caused by weakness or dysfunction of the levator palpebrae superioris, the muscle that lifts the lid. At Argent Plastic Surgery, Dr Lee Hanjing, a fellowship-trained specialist plastic surgeon based at Mount Alvernia Hospital, can assess and perform ptosis correction for both functional and cosmetic presentations. Ptosis surgery is often confused with upper blepharoplasty, but the two address different anatomy. This droopy eyelid treatment that works depends entirely on identifying which structure is at fault and choosing a technique that matches the cause rather than the surface appearance.

What Is Ptosis (Droopy Eyelid)?

Ptosis is the clinical term for an upper eyelid that sits lower than it should. It occurs when the levator palpebrae superioris (the primary muscle responsible for lifting the eyelid) stretches, weakens, or separates from its proper anatomical position.

Presentation and Severity

In a normal eye, the eyelid margin rests roughly 1 to 2 millimeters below the upper limbus (the boundary where the colored iris meets the white of the eye). With ptosis, the lid falls below this line.

While commonly referred to by the lay terms "droopy" or "drooping" eyelid, the condition can vary significantly in severity:

  • Mild ptosis: The lid sits just a millimeter or two lower than normal. It may affect only one eye or both, often making a patient look tired without a clear explanation.
  • Severe ptosis: The eyelid drops low enough to cover the pupil and obstruct the visual axis, significantly limiting sight.

Ptosis can develop at any age. Some patients are born with it (congenital), while others develop it gradually later in life (acquired). The underlying cause and the patient's age both play a critical role in determining the right treatment approach.

Ptosis Surgery vs. Blepharoplasty

Ptosis is frequently confused with standard upper blepharoplasty, but they address entirely different structural issues:

ProcedureTarget IssueWhat it Does
Upper BlepharoplastySagging, excess skinRemoves redundant skin and fat from the eyelid surface.
Ptosis SurgeryMuscle weakness or separationRepairs and tightens the underlying lifting muscle (levator).

Note: While blepharoplasty is often purely cosmetic, ptosis surgery is functional, aimed at restoring normal vision and proper eyelid mechanics.

What Causes Droopy Eyelids?

There are five recognised cause categories of ptosis. Each has different surgical implications, and identifying the correct category is the first step in any assessment.

  • Aponeurotic (Involutional): The most common cause in adults, where the levator aponeurosis stretches or thins with age; also associated with prolonged contact lens wear.
  • Congenital: Present from birth, due to maldevelopment of the levator muscle; may cause amblyopia in children if the lid obstructs the visual axis during the developmental period.
  • Neurogenic: Linked to third nerve palsy, Horner syndrome, or myasthenia gravis; medical evaluation of the underlying cause comes before any surgical planning.
  • Traumatic: Resulting from injury to the eyelid or levator, including from previous eye or eyelid surgery.
  • Mechanical: Where a mass, excess upper lid skin, or scarring weighs the lid down without the levator muscle itself being weak.

The cause determines both the appropriate surgical technique and the timing. Treating aponeurotic ptosis with a frontalis sling, or treating a congenital case with a routine levator resection, leaves the patient with a result that does not match what their anatomy needs.

Functional vs Cosmetic Ptosis: Is Your Surgery Medisave-Claimable?

Ptosis is divided into two categories for the purpose of medical necessity, and the distinction matters both clinically and financially.

Functional ptosis is when the lid sits low enough to obstruct the upper visual field. This is considered medically necessary, and the surgery to correct it may be Medisave or insurance claimable, subject to clinical assessment and the terms of your insurer. Patients with functional ptosis often develop compensatory habits without realising it, including persistent brow raising, tilting the chin upward to see, and tension headaches caused by sustained activation of the frontalis muscle.

Cosmetic ptosis is when the lid position is lower than the patient prefers but does not significantly affect vision. This is treated as an elective procedure and is not Medisave-claimable.

Visual field testing and MRD1 measurement (the distance from the central corneal light reflex to the upper lid margin) are part of the clinical assessment, and the findings establish whether the case meets the threshold for functional ptosis.

Dr Lee Hanjing reviews these findings at the consultation and advises on the likely claimability of the surgery. For information on the insurers we work with for reconstructive and medically necessary procedures, see our insurance partners page. Claimability is determined on a case-by-case basis by your insurer.

Who Is Suitable for Ptosis Surgery?

Suitability is determined by the clinical assessment, rather than patient preference.  The following groups are typically appropriate candidates for ptosis correction:

  • Adults With Acquired Ptosis: Patients whose drooping has developed gradually and is unlikely to improve spontaneously, most often from levator aponeurosis stretching.
  • Children With Congenital Ptosis: Early assessment is recommended where the lid position risks interfering with visual development, as untreated obstruction during this period can lead to amblyopia, known as “lazy eye”.
  • Patients With Vision-Obstructing Drooping: Cases where the lid is sitting low enough to limit the upper visual field and produce compensatory brow raising or chin elevation.
  • Patients With An Aesthetic Concern Affecting Daily Life: Adults whose lid position is mild but is sufficient to affect how they look and feel in their day-to-day life, where surgical correction is clinically reasonable.

Where the cause of a droopy eyelid is tied to an underlying neurological or medical condition (such as myasthenia gravis), medical management of the primary disease comes first, and surgery is considered only after the condition is stabilised. 

Ptosis Surgery Techniques

The choice of technique is determined by levator function and the underlying cause, rather than patient preference. The two primary approaches address different clinical starting points: 

Levator Resection (Levator Advancement)

Levator resection applies to patients who still maintain some preserved, functional levator muscle activity. During this procedure, the surgeon shortens, tightens, or reattaches the stretched levator muscle or its tendon (aponeurosis) to restore its proper lifting capacity.The incision is made within the natural upper eyelid crease. Once healed, this incision remains hidden within the eyelid fold when the eye is naturally open. Where a patient also presents with excess upper eyelid skin sagging, this corrective technique can be combined with an upper blepharoplasty in the same surgical setting, addressing both the muscular weakness and the superficial skin component simultaneously. 

Frontalis Sling (Brow Suspension)

The frontalis sling treatment technique is reserved for severe ptosis in which levator function is poor or non-functional, meaning that the muscle cannot lift the lid effectively on its own. Instead of repairing the weak muscle, a biological or synthetic "sling" (often made from the patient's own fascia lata tissue or a medical-grade synthetic material) is threaded beneath the skin. This sling connects the upper eyelid directly to the frontalis muscle in the forehead. Following surgery, the forehead brow muscle takes over the lifting mechanism, raising the upper eyelid whenever the patient naturally elevates their eyebrows. This approach is most commonly indicated for severe congenital ptosis in Singapore where childhood muscle development is minimal. 

In Singapore, ptosis surgery is generally performed as a day surgery. Anaesthesia is either local with intravenous sedation or general, depending on the case, the patient's age, and whether additional procedures are being performed in the same operation. The procedure takes approximately 1 to 2 hours per eye. The technique used in a given case is determined after the full clinical assessment, not in advance.

Recovery After Ptosis Surgery

Recovery follows a predictable arc, though the pace varies by individual and by technique.

Immediately After Surgery: Swelling, bruising, eyelid tightness, temporary blurred vision, light sensitivity, dry or watery eyes, and temporary asymmetry are all expected in the first few days. The asymmetry, in particular, can be unsettling for patients who are not warned in advance, but it usually settles as the swelling resolves.

Week 1: Bruising becomes less noticeable. Sutures are removed at around 4 to 7 days, or dissolve on their own, where dissolvable sutures are used. Most patients are able to return to desk work within the week. Exercise, contact lens wear, and eye makeup should be avoided for around two weeks.

Weeks 2 to 4: Most patients see significant improvement in swelling and lid position. Light exercise can usually resume from week 3 with the surgeon's approval. Vision stabilises as the lid settles and the eye produces tear film normally again.

3 Months: Full recovery for most patients. The lid position continues to refine and settle through this period, and the final result is generally assessed at the 3-month mark.

General aftercare instructions are consistent across techniques:

  • Cold Compresses For The First Three Days: Useful in the early days to reduce swelling around the eyelids.
  • Sleep With The Head Elevated: Reduces fluid pooling overnight and helps the swelling settle more quickly.
  • Eye Shield At Night For The First Week: Worn while sleeping to prevent accidental rubbing of the surgical site.
  • Limit Screen Time In The Early Days: Extended screen use can dry the eyes and slow comfort recovery.
  • Gentle Eyelid Cleaning As Advised: Follow the cleaning routine given at the post-operative appointment, without scrubbing or pulling at the area.
  • Medications As Prescribed: Antibiotic ointment and eye drops are used as directed; blood-thinning medications should be avoided during the surgical period unless cleared by the prescribing doctor.
  • Attend All Follow-Up Appointments: Follow-ups are part of the recovery process and should be attended even when recovery appears to be progressing well.

Ptosis Surgery Cost in Singapore

The cost of ptosis correction varies by case, as the appropriate fee depends on the assessment findings and the procedure involved. The main factors determining the price of this droopy eyelid surgery in Singapore are:

  • Number of Eyelids Treated: Whether the correction is unilateral (one eye) or bilateral (two eyes).
  • Surgical Technique Required: Whether the case is suitable for levator resection or requires a frontalis sling, determined by levator function.
  • Functional or Cosmetic Indication: This affects claimability and the structure of the patient's out-of-pocket cost rather than the surgical fee directly.
  • Concurrent Procedures: Whether the ptosis repair is performed alone or combined with an upper blepharoplasty or other procedure in the same setting.

Unlike purely cosmetic procedures, functional ptosis surgery may be Medisave-claimable or covered by standard health insurance policies.

Eligibility depends on strict clinical criteria: a certified ophthalmologist or a fellowship-trained specialist plastic surgeon must perform a formal visual field test. If the test results definitively prove that the droopy eyelid obstructs the upper visual field by a specific degree, the procedure is classified as a medically necessary reconstructive surgery. Claimability is determined case-by-case, and coverage cannot be guaranteed prior to formal medical assessment.

Frequently Asked Questions About Ptosis Surgery