Is Cataract Surgery Painful? 4 Sensations and 3 Red Flags

The short answer to “is cataract surgery painful” is no for most people. The eye is numbed before we begin, so during cataract surgery, which takes about 15–20 minutes per eye, you notice pressure, bright light and movement rather than sharp pain. If you're flying in from abroad, the days after surgery matter most, because any pain that isn't settling should be checked in Seoul before you board the flight home.

I'm Dr. Kim Sun-young, Medical Director at Healing Eye Clinic in Gangnam, where one dedicated surgeon follows each patient from the first exam through surgery and aftercare.

If “is cataract surgery painful” is what's holding you back, call us on +82-2-566-1222 and tell us the dates you're considering. We can go through it at your consultation in Seoul, where an English interpreter is available.

What you feel on the table, sensation by sensation

Most of what people notice comes down to four things: pressure, light, fluid and the lid holder. Most patients don't list pain, because the surface of the eye is numbed first. The American Academy of Ophthalmology says the numbing is done with drops or an injection around the eye. It adds that you stay awake and may see light and movement, but you won't see what the surgeon is doing.

• Pressure. When the surgeon works on the lens, many people feel a dull push, a bit like a fingertip resting on a closed eyelid. Numbing blocks sharp pain but doesn't remove every sense of touch.
• Light and colour. The microscope light is bright. People often describe shifting shapes or colours rather than a clear picture.
• Fluid. The eye is kept moist the whole time, so a cool, watery feeling running toward the cheek is common.
• The lid holder. A small clip keeps the eye open, so you don't have to worry about blinking at the wrong moment. Some people find this the strangest part, but it isn't a painful one.

The clinic lists the operation itself at roughly 15 to 20 minutes per eye. The National Eye Institute notes that you can be given medicine to help you relax, which can help people who dread lying still more than the surgery itself.

Is it worse if you're anxious or your eyes are sensitive?

In short, it can make pressure feel bigger, though, and make it harder to keep the eye still, so talk about relaxing medicine before surgery day rather than on the table. Sensitive or dry eyes usually show up afterwards, as a scratchier first day or two, and not as pain during the operation.

Numbing drops act on the nerves at the front surface of the eye. Whether drops alone are enough, or an injection around the eye is a better fit, comes down to things like how steadily you can hold your gaze and how long the surgery is expected to take. Ask your surgeon directly: “Will I have drops only, or an injection too? Will I be offered something to help me relax?”

If you already know your eyes are dry, say so at the exam. The tear film matters before cataract surgery for two reasons. A dry surface can make the first days feel grittier, and it can also affect the measurements used to choose the lens.

How much does the eye hurt in the first days after surgery?

Mild discomfort is common, but strong pain is not. The National Eye Institute says the eye may feel itchy, uncomfortable and sensitive to light and touch, and should feel better after one or two days. Most people describe it as grit or a scratch rather than an ache.

What helps in those first days is simple: use the prescribed drops on time, don't rub or press the eye, and keep soap and water out of it. The American Academy of Ophthalmology also advises wearing a protective shield while you sleep if your surgeon asks you to. MedlinePlus recommends dark sunglasses outdoors once the patch comes off, which also helps with light sensitivity.

Vision is often blurry at first while the eye settles. The clinic describes recovery as getting back to daily life within days, with vision settling gradually after that. Our cataract recovery timeline gives the day-by-day picture, and our post on vision after cataract surgery for patients flying to Seoul covers what the view through the new lens tends to look like in week one.

Three kinds of pain that are not normal

What matters is pain that gets worse instead of better. Normal discomfort fades over the first day or two. Three things need an eye doctor the same day: pain that builds, pain with worsening vision, and new flashes or floaters.

Risks and side effects to know

Like any surgery, cataract surgery carries risks. The American Academy of Ophthalmology lists infection, bleeding inside the eye, retinal detachment, a lens implant moving out of position, and vision loss. MedlinePlus describes infection and bleeding as very rare. It also notes that conditions such as glaucoma or macular degeneration can make surgery harder or limit how much vision improves. Healing time and the final result differ from one eye to the next, and only the in-person exam can tell whether surgery suits you and when.

One later change is worth knowing about so it doesn't frighten you. The AAO notes that vision can turn cloudy again weeks, months or years after surgery as the capsule behind the lens clouds over. A laser opening in that capsule treats it. This is a common, well-understood follow-up issue, and the cataract has not come back.

If you have glaucoma, an old eye injury or past retinal treatment, mention it in your first WhatsApp message, with a photo of any recent eye report. These details change how surgery day and the days after it are planned, and they're much easier to talk through before you book flights.

Who should wait, or think twice, before surgery?

Not everyone with a cataract needs surgery right away. Updated glasses can often handle early cataracts for a while, and surgery makes sense once the blur gets in the way of reading, driving or work. An active eye infection, uncontrolled inflammation or a flare of eyelid inflammation is usually treated first.

There are a few other situations where waiting or rethinking is reasonable:

• Another eye disease limits the gain. Glaucoma, macular degeneration or a retinal problem can limit how much sharper things get, so expectations need to be set before surgery.
• You can't stay for the check-up. If your trip ends the day after surgery, there's no time to deal with a problem in Seoul. Our post on how long to stay in Korea for cataract surgery covers planning, and the exact number of days is confirmed at your consultation.
• Lying flat is hard. Back pain, a cough or claustrophobia can make 15 to 20 minutes feel long. These can usually be managed, but only if the surgeon knows in advance.

I explain how timing is decided in when to have cataract surgery.

Does the lens you choose change how surgery feels?

No. The operation feels much the same whichever lens goes in. What the lens changes is how you see afterwards. At Healing Eye, the lens implant chosen during cataract surgery can also correct presbyopia and astigmatism in the same step.

That choice has trade-offs. Lenses that spread focus across distance and near can cause halos or glare around lights at night for some people, though this affects vision and doesn't hurt. A single-focus lens tends to give a cleaner image at one distance, and you use reading glasses for the rest. The right trade-off comes down to your work, how much you drive at night and the health of the rest of the eye. If a family member reads Korean, the clinic's Korean-language page on lens implant options is worth sending them before the consultation.

Planning the trip around the sore days

The uncomfortable stretch is short, so planning is mostly about where you'll be during it. Book surgery so the check-up after it falls on a day the clinic is open. Healing Eye Clinic is open Monday to Thursday 10:00 to 18:30, Friday until 21:00 and Saturday 10:00 to 14:00, and closed on Sundays and public holidays. MedlinePlus notes that the follow-up exam usually happens the next day, so a Saturday operation needs extra planning.

The National Eye Institute notes that you won't be able to drive after surgery, so bring someone with you or arrange a ride. The clinic is at 470 Gangnam-daero, 10–11F, a one-minute walk from Sinnonhyeon Station, and its partner hotel is O'Cloud Hotel in Seocho-gu. If you're coming with a parent, cataract surgery in Korea for parents covers the companion's role, and our guide to cataract surgery in Korea gives the wider picture.

Consultations can be held with Japanese, Traditional Chinese or English interpreters. That matters for one simple reason: “is this pain normal?” is a question you want answered in your own language, without guessing.

The next step is a small one. On WhatsApp, send a photo of the medicines you take every day, including blood thinners and any eye drops, and write your message in English. These details affect how surgery day is set up, and sending them now starts the conversation before you buy a ticket.