In short. Eye bag surgery carries the general risks of any operation in this area, but the ones that matter are specific to the lower lid: a lid that sits lower or pulls away, a hollow left by removing too much fat, a visible scar, dryness, and the rare bleed that needs care at once.

Key points

  • The lower lid risks are a low lid, a hollow, a visible scar and dryness.
  • Removing too much skin is the usual cause of a lid that pulls away.
  • Fat removed does not return, so a hollow is corrected by adding volume.
  • Bruising, swelling, tightness and numbness are expected and settle.
  • Severe pain or sudden vision loss after surgery is an emergency.

The risks that belong to the lower lid

Every operation in this area has a list of things that can go wrong, and most of them are minor and temporary. The ones that matter here are specific to the lower lid, and a patient who is deciding should be able to name them before the date is set rather than hear about them afterwards.

What happens when the lid sits lower or pulls away?

This is the complication the lower lid is known for. It happens when the support that holds the lid margin against the eye is weakened, most often by removing too much skin, and it can leave the eye exposed, watery and uncomfortable. Mild cases usually improve as the tissue settles. A lid that has been pulled down and stays there may need further surgery, and that repair is harder than the first operation. It is the reason lid tone and skin removal are treated so cautiously.

Why a hollow is hard to correct

Removing too much fat leaves a depression under the eye that fills with shadow. The fat does not come back, so correcting it means adding volume rather than restoring what was taken. Placing volume in this area is possible and usually helps, and it rarely reproduces the original anatomy exactly. Where the hollow is significant, volume can be added with a transfer of your own tissue or with filler, usually once the lid has settled rather than in the first weeks.

Problem What it looks like When it appears What to do
Bruising, swelling and tightness The expected aftermath of the operation Early, and settles over weeks to months Allow it to settle and report concerns
Asymmetry One side differs from the other Only judgeable after the swelling has gone Raise it at review
Dryness or watering An eye that feels dry or waters Can appear or worsen after the operation Report and monitor it
A lid that pulls away The margin no longer rests against the eye As the tissue settles Contact the surgical team
A hollow A depression that fills with shadow After too much fat has been removed Volume can be added once the lid has settled
Bleeding behind the eye Severe pain and loss of vision After the operation Emergency care immediately

What is expected rather than a complication?

Bruising, swelling, tightness, a changed blink and temporary numbness are ordinary after this operation and settle over weeks to months. Asymmetry between the two sides is common as well, and it can only be judged after the swelling has gone. Dryness and watering can appear or worsen, particularly in an eye that was already dry. These are things to report and to monitor, not signs that something has failed.

What the scar and the eye surface can do

Where the operation is done through the skin, the scar line sits under the lashes and can remain visible, though it is usually concealed by the lid margin. Numbness in the skin below the lid can persist for months.

What should be reviewed rather than waited out?

A lid that is clearly pulling away from the eye, or that has dropped compared with the other side, needs the surgical team. Dryness, watering or a change in how the eye closes that is not improving should be reviewed rather than waited out.

When is it an emergency?

Much less common, and the reason the warning is given at all, is bleeding behind the eye. Severe eye pain, sudden loss of vision or a rapidly tense, swelling eyelid needs emergency care immediately, not an appointment. What is done about each of these is part of what you are agreeing to. A plan that cannot say how a lid that sits low would be managed has not finished the conversation.

Sources

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Frequently asked questions

Which risks should I be able to name before I agree?

A lid that sits lower than before or pulls away from the eye; a hollow that was not there before; asymmetry that does not settle; a scar line under the lashes that stays visible where the skin was cut; dryness or watering that worsens; numbness that can persist for months; and bleeding behind the eye, which is uncommon and needs emergency care. If a plan cannot discuss those, it has not discussed risk.

If the lid does end up lower, what is actually done about it?

Mild cases are watched, because the tissue often settles over the first months and the position improves. Where it does not, the options are support or tightening of the lid, or a revision, and the repair is a harder operation than the first one. That is why the assessment spends so long on lid tone and on how much skin might be removed, and why a conservative plan is preferred.

Is numbness under the eye after the operation permanent?

Usually not. The skin below the lid can feel numb or altered for months, and most of it returns as the fine nerves recover. What is honest to say is that it can take a long time, that it may not return completely, and that it is one of the effects that is expected rather than a sign that something has gone wrong.

Risks & Limitations

  • A lower lid that sits lower than before, or pulls away from the eye, is the complication this operation is known for; it may settle on its own or may need further surgery.
  • The fat removed from under the eye does not return. Taking too much can leave a hollow that was not there before, and correcting it means adding volume rather than restoring what was taken.
  • Dryness, watering and a changed blink can appear or worsen, particularly in an eye that was already dry before the operation.
  • The two sides of a face are rarely symmetrical to begin with, and asymmetry is judged only after the swelling has settled rather than in the first weeks.
  • Where the lid is reached through the skin, the scar line under the lashes can remain visible, though it is usually concealed by the lid margin.
  • Bleeding behind the eye is uncommon, and it is the one complication here that needs emergency care immediately rather than an appointment.
  • Bruising, swelling, tightness and temporary numbness are expected rather than complications, and settle over weeks to months.

When to Seek Care

  • Severe eye pain, sudden loss of vision, or a rapidly swelling, tense eyelid: seek emergency care immediately.
  • A lower lid that is pulling away from the eye, or that has dropped noticeably compared with the other side.
  • Bleeding from the wound that does not stop with gentle pressure.
  • Fever with spreading redness, warmth or discharge around the eye.
  • Dryness, watering or a changed blink that is not improving rather than settling.
  • Pain that is worsening rather than settling, or a wound that opens.

References & Further Reading

  • American Society of Plastic Surgeons (ASPS) — aesthetic surgery and patient safety guidance
  • International Society of Aesthetic Plastic Surgery (ISAPS) — international practice standards
  • National Institute for Health and Care Excellence (NICE, UK) — relevant clinical guidance
  • Chinese Medical Association Plastic Surgery Branch — clinical guidance

Medically reviewed by Tongchun Mao, MD (毛彤春), Deputy Director & Head of Aesthetic Surgery. Last reviewed: 19 September 2026.

This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.