Blepharoplasty or ptosis repair: which operation do I need?

The wrong operation will not help

This is the central point that patients are often not told clearly enough. Blepharoplasty and ptosis repair are not interchangeable. They operate on different structures, they correct different problems, and performing the wrong one will leave the underlying issue unresolved.

A blepharoplasty on someone who actually has ptosis will remove excess skin, and the lid will still sit too low afterwards. A ptosis repair on someone who simply has too much skin hanging over their lashes will lift the lid height, and the heavy, hooded appearance will still be there. Both operations are highly effective for the right indication. The key is knowing which one you need, and sometimes the answer is both.

What is blepharoplasty?

Blepharoplasty is an operation to remove excess skin from the upper eyelid. With age, the skin of the upper eyelid gradually stretches and loses its elasticity. This excess skin accumulates above the lash line, eventually falling over it and producing the heavy, hooded appearance that many people find both cosmetically unwanted and functionally limiting, particularly if the skin encroaches on the peripheral visual field.

The target of a blepharoplasty is the skin itself. The surgeon marks precisely how much skin can safely be removed, excises it, and closes the wound with fine sutures. In some cases, a small amount of underlying fat may be removed or repositioned. The lid height, that is, the position of the eyelid margin relative to the eye, is not changed by a standard blepharoplasty. The lid is the same height as before; it simply has less skin hanging over it.

Upper eyelid blepharoplasty can be performed under local anaesthetic as a day case. Recovery involves bruising and swelling for one to two weeks, and the results are generally long-lasting.

What is ptosis repair?

Ptosis (pronounced “tosis”) is the medical term for a drooping upper eyelid, specifically, one where the eyelid margin sits lower than it should. In a normal upper eyelid, the margin sits 1–2 mm below the top of the iris. In ptosis, it sits lower than this, covering more of the iris, and sometimes partially obscuring the pupil.

The most common cause of acquired ptosis in adults is disinsertion or stretching of the levator aponeurosis, the tendon of the levator muscle, which is the muscle responsible for lifting the eyelid. This happens gradually with age and is also associated with prolonged contact lens wear. The muscle is still working; it is simply no longer transmitting its force effectively to the lid because the tendon has become lax.

Ptosis repair involves tightening or advancing this tendon, restoring the connection between the levator muscle and the eyelid margin. The lid is lifted to the correct height. This is quite different from removing skin: the operation is performed on a deeper layer of the eyelid, not the skin surface.

How to tell which you have

The most useful question is: where does your upper eyelid margin sit? Look in a mirror in good light and observe the position of the upper lid edge relative to your iris, the coloured part of the eye. In a normal lid, the margin rests 1–2 mm below the top of the iris. If it covers more of the iris than this, particularly if it is asymmetric, ptosis is likely to be contributing.

Now look at the skin above the lashes. Is there excess skin hanging down? If the lid margin is in the right position but skin is draping over the lashes, dermatochalasis (excess skin) is the primary issue and blepharoplasty is appropriate. If both the margin is low AND there is excess skin, both operations may be needed.

One sign worth noting: if you find yourself subconsciously raising your eyebrow on the affected side to lift the lid, this is a classic compensatory posture for ptosis. The frontalis muscle (the forehead muscle) is being recruited to help lift an eyelid that the levator is not lifting effectively. It is a useful indicator.

Having blepharoplasty and ptosis repair together

Many patients have both excess skin and a low lid margin. This is common because the same age-related changes that weaken the levator aponeurosis also affect the skin. When both are present, both can be addressed in a single operation. However, the surgical planning becomes more precise, because the amount of skin that can safely be removed depends on the final lid height after the ptosis repair.

This is one reason why the assessment needs to be careful and thorough. An oculoplastic surgeon will measure lid height formally using standardised landmarks, assess skin excess, evaluate the visual field, and examine the function of the levator muscle before determining the operative plan. The sequence and the amounts involved are planned specifically for each patient.

Who should assess you

The appropriate specialist for this assessment is an oculoplastic surgeon, an ophthalmologist who has completed additional subspecialty training in eyelid surgery and the structures around the eye. Oculoplastic surgeons are specifically trained to distinguish between ptosis and dermatochalasis, to recognise when both are present, and to plan and perform the appropriate surgery.

A general plastic surgeon may have experience with blepharoplasty but is less likely to be familiar with the specific measurement techniques and surgical approaches required for ptosis repair. Performing blepharoplasty when ptosis is the primary problem, or not recognising coexisting ptosis before a blepharoplasty, can lead to an unsatisfactory result.