Upper eyelid surgery and ptosis repair

What it is

Upper blepharoplasty removes a measured strip of eyelid skin, and sometimes a little muscle or fat, through an incision hidden in the lid crease. It treats hooding. It does not change how far the eye opens.

Ptosis repair does change that. The upper lid is held up by levator palpebrae superioris and by Muller muscle behind it, and when either is stretched, detached or weak the lid rests lower over the eye. The repair shortens or re-attaches that mechanism, either from the front through the same crease incision or from behind the lid with no external incision at all.

How it works

What LooksRatio measures here is whether the two eye apertures match. An eye that opens less than its partner is the commonest reason that measurement is off, and unilateral or asymmetric ptosis is a specific, diagnosable, correctable cause of it. A surgeon measures margin-to-reflex distance, which is the gap from the centre of the pupil to the upper lid margin, and levator function, which is how far the lid travels from full down-gaze to full up-gaze. Those two numbers, not the appearance, decide which operation is appropriate.

The eye that opens more is sometimes the abnormal one. A brain compensating for a droop on one side raises both lids, so the good eye can be doing the work of two, and correcting the droopy side lets the other settle. This is why an asymmetry measured from a photograph is a reason to be examined rather than a diagnosis.

Recovery

Bruising and swelling for one to two weeks; sutures out at about a week. Most people are back at work inside two weeks. Dryness, grittiness and light sensitivity are common for several weeks because the lid is not yet closing completely at night.

Ptosis repair takes longer to judge than blepharoplasty. Swelling moves the lid height, so the final position is generally assessed at three months, and revision before then is usually premature.

Risks and what actually goes wrong

For blepharoplasty: dry eye, visible or asymmetric scars, taking too much skin, which is the one hard thing to undo, and lagophthalmos, where the eye no longer closes fully.

For ptosis repair the dominant issue is not a complication but accuracy. Published reoperation rates for adult ptosis surgery sit in the region of 8% to 15% depending on technique and how strictly success is defined, because the target is a lid margin position measured in fractions of a millimetre on a tissue that swells. Under-correction and over-correction are both common enough that a surgeon should raise the possibility of a second sitting before the first.

Lower-commitment alternatives

For a small droop caused by a weak Muller muscle rather than a stretched levator, an eye drop containing oxymetazoline can raise the lid by roughly a millimetre for several hours. It is a prescription product, it works only in that specific situation, and it does nothing at all for hooding.

There is no injectable that opens an eye. Filler and toxin around the eye change the tissue around the aperture, not the aperture.

What LooksRatio assumes

The projection moves eye balance 70% of the way to its reference range, and that is a deliberately conservative figure for an operation aiming at a fraction of a millimetre with a real reoperation rate. It also assumes the asymmetry the app measured is in the lid rather than in the orbit, the globe position or the photograph, which it cannot check. A turned head or an uneven light produces the same number. It is a ceiling, not a forecast, and not a diagnosis.