What can go wrong after eyelid surgery? The recognised complications, and which ones need help the same day

"Eyelid surgery gone wrong" is a frightening search, and people type it most at the point where they are deciding, or where something feels different after an operation. I would rather you read the plain list now than meet it for the first time on a consent form. Eyelid surgery has recognised complications, which are known problems that can occur even in skilled hands. Most are minor and settle. A few need help the same day. This piece separates the two, and every frightening item ends in one clear action.

Can eyelid surgery go wrong?

Yes. Every operation carries risk, and the NHS says so directly: the results cannot be promised, and the surgeon should explain how likely each complication is and how it would be treated. Complications are not evidence that someone was careless. They are a known part of operating on a small, mobile structure that has to blink, close and drain tears perfectly for decades.

The useful question is not whether anything can go wrong, but which problems are common and settle, which are uncommon and need a plan, and which are rare and urgent. That is how the rest of this piece is arranged. It covers upper and lower blepharoplasty (eyelid skin and fat surgery), ptosis surgery (lifting a drooping lid) and double eyelid surgery, and I will say where the sources single out one of them.

Which changes after eyelid surgery are expected and settle on their own?

Bruising, swelling, dry or gritty eyes, slightly blurred vision, and numb or tight lids are all expected, and they typically settle. Cambridge University Hospitals says bruising usually resolves within about 2 weeks and swelling within a few days. It also says slight blurring is common straight after surgery, from a drying surface and antibiotic ointment, and often clears with blinking. The NHS lists puffy, numb lids that are hard to close, and irritated or watery eyes that can last a few weeks. Scars can feel tight for a few months.

Chemosis, which is swelling of the clear surface layer over the white of the eye, is typically linked with lower lid surgery and can last for several weeks or months, according to Cambridge. It looks alarming and is usually not dangerous. The week-by-week picture is in what upper blepharoplasty recovery actually involves. The action for anything in this group is to follow your surgeon's instructions and mention it at your follow-up visit.

What are the less common complications, and what can be done?

The NHS lists blurred or double vision, eyes that look uneven, noticeable scarring, and changed sensation in the lids as occasional results. It lists injury to eye muscles, a lower lid that droops away from the eye and turns outwards (ectropion), bleeding into the eye socket and visual impairment as rare. Any operation also carries a small risk of infection, excessive bleeding, a blood clot in a vein and an allergic reaction to the anaesthetic.

Three of these have their own guides. Excessive skin removal can leave a poor blink and an eye that will not close fully, which Cambridge says is more likely if the eyes were dry beforehand, and I explain that in lagophthalmos: when the eyelids do not close fully and dry eye after eyelid surgery. A lid that sits too high or too low is covered in eyelid retraction after eyelid or brow surgery. I will not repeat them here.

Double eyelid surgery has a specific list. A review of complications of Asian double eyelid surgery groups them into patient dissatisfaction, problems with the eyelid crease, problems with eyelid height, suture-related complications, and complications common to all eyelid surgery. The authors' point is that knowing the cause of each lets a surgeon revise it. That is the reassuring half: many of these problems have a recognised plan. The action is to see the surgeon who knows your operation, or a second eye surgeon, once the swelling has had time to settle.

Can eyelid surgery cause blindness?

Very rarely, yes. It is the question people are most afraid to ask, so I will answer it plainly. Cambridge University Hospitals says severe bleeding into the eyelids or behind the eye is rare, but may cause loss of vision if it is not managed rapidly and properly by the operating team, and it describes the risk of vision loss as extremely rare. The NHS lists bleeding into the eye socket and visual impairment among the rare serious problems.

The mechanism is worth knowing, because it explains the warning signs. The eye socket is a closed space. Blood collecting behind the eye, called retrobulbar haemorrhage or retrobulbar haematoma, raises the pressure inside that space and can squeeze the optic nerve and its blood supply. A systematic review of 93 reported cases, most after trauma and about a quarter after an operation, calls it a diagnostic and therapeutic emergency. It found symptoms began around 24 hours after the event, that a shorter time to treatment and surgical decompression, which means releasing the pressure, were linked with better recovery, and that recovery of vision is possible when it is recognised and treated early.

That is not a rate to plan your life around. It is the reason the action matters: speed. Any sentence that starts "rare" has to end with "and you would know, and you would act".

Which signs after eyelid surgery need help the same day?

Severe or building pain, especially with tight swelling of a lid, or any dimming or blurring of vision that does not clear with blinking, needs help the same day. These are the signs I would want anyone to know before they leave the operating room:

• Sudden pain in or around the eye, or pain that is severe or getting worse when it should be easing.
• Swelling that comes on suddenly: one lid or the eye itself becomes tight, hard and painful, or the eye looks pushed forward or bulging, especially on one side only.
• Vision that dims, blurs or is lost and does not clear with blinking, or stays severely impaired beyond 24 to 48 hours, which is when Cambridge asks patients to alert the surgeon. Check your vision one eye at a time.
• Any unexpected symptom. The NHS says to contact the clinic as soon as possible for severe pain or anything unexpected.

A review of eyelid surgery complications names the signs of bleeding in the eye socket as an eye pushed forward (proptosis), reduced eye movement, a tense socket, and pain on one side with reduced vision. The action is the same for every item: phone the team that operated, straight away. If you cannot reach them, go to an emergency department the same day and say that you have had eyelid surgery. Do not wait for the morning, and do not treat it with extra painkillers. Bruising and swelling that are mild and clear vision are expected, and can be mentioned at your follow-up. But any sudden pain, sudden swelling, bulging eye or loss of vision means go now: do not wait to see if it settles. If in doubt, ring.

How can I lower the chance of a complication, and what should I ask?

You cannot remove the risk, but you can lower some of it and prepare for the rest. Tell the surgeon about every medicine you take. The NHS says the surgeon needs to know about anything that reduces clotting, such as aspirin, warfarin or apixaban. Tell them about dry eyes, thyroid eye disease and diabetes, which Moorfields Private lists among the factors it assesses before eyelid surgery, and about smoking, which Moorfields says can slow recovery. Practical preparation is in getting ready for eyelid or orbital surgery.

Then ask three things. What are the complications of this operation, and how would they be treated? Who do I phone, day or night, and who will see me if something goes wrong? Where will follow-up happen? This matters most if you are considering surgery away from home, whether that is another city or another country. Follow-up is part of the operation, and problems can start days after you have left. If you are unsure, a second opinion before eyelid or orbital surgery is a normal, sensible step. And if you are also wondering what the operation will feel like, I cover that in does eyelid surgery hurt.

If you are still deciding whether surgery is even the answer, start with what makes eyes look tired, and the decisions that follow are gathered under Before you decide. I would want you to leave any consultation knowing three things: the risks, the warning signs, and the phone number.