What Can Go Wrong in Cataract Surgery? Complications Explained Honestly, Rare to Common

The consent form is two pages long, and she reads every line twice. Her left eye has turned the kitchen into a foggy aquarium; her surgeon has told her that a fifteen-minute operation can clear it. Yet the form lists infection, bleeding and a detached retina, and the word “rare” offers less comfort than it should. What she wants is not reassurance. She wants to know what each of those words actually means, and how often they happen to people like her.

That is a fair request, and it deserves an honest answer rather than a glossy one. Cataract surgery complications are real, they range from an inconvenience that is fixed with a laser to a handful of genuinely sight-threatening events, and the gap between those two ends is enormous. Knowing where each problem sits on that spectrum changes how you prepare, what you watch for afterward, and which questions you bring to the clinic.

This article walks through the risks in order, from the common and manageable to the rare and serious, using figures from mainstream medical sources rather than clinic brochures.

What actually happens during cataract surgery?

A cataract is the natural lens of the eye turning cloudy, usually with age. Surgery does not polish that lens; it removes it and replaces it with a clear plastic implant called an intraocular lens, or IOL. Understanding the steps makes the complication list far less mysterious, because almost every problem maps onto one of them.

The surgeon numbs the eye with drops or an injection around it, then makes a tiny incision at the edge of the cornea, the clear dome at the front. Through that opening, a circular window is torn in the thin bag that holds the lens, known as the capsule. An ultrasound probe then breaks the cloudy lens into fragments and suctions them out, a technique called phacoemulsification. The empty capsule stays behind like a hammock, and the folded implant is slid into it, where it unfurls. According to the NHS, the operation typically takes 30 to 45 minutes and most people go home the same day. The incision is usually small enough to seal without stitches.

Every step has a weak point. The capsule is thinner than cling film, so it can tear. Ultrasound energy warms the cornea and can leave it swollen. The incision, however small, is a door through which bacteria can enter. The implant’s power is chosen from measurements taken before surgery, so a measurement error becomes a prescription error. None of this is a reason to avoid the operation. It is simply the anatomy of risk, and it explains why your surgeon will talk about capsules, corneas and retinas rather than vague “problems”.

How common are cataract surgery complications really?

Frequency is where honest conversation matters most. The NHS estimates the risk of a serious complication at around 1 in 50 operations, and the risk of permanent loss of sight in the treated eye at around 1 in 1,000. Those two figures bracket the discussion: most things that go wrong can be treated, and the catastrophic outcome is uncommon but not zero.

The table below groups the main complications by how often they are reported in mainstream sources, and by what usually happens next. It is a guide, not a personal forecast; your own numbers depend on your eye and your health.

Complication	How often, broadly	Usual course
Posterior capsule opacification	Common; may appear months to years later	Treated with a short outpatient laser
Temporary swelling, pressure rise, dry or gritty eye	Common in the first days to weeks	Settles with time or prescribed drops
Cystoid macular edema (retinal swelling)	Less common	Usually responds to anti-inflammatory treatment over weeks
Posterior capsule tear during surgery	Uncommon; part of the 1 in 50 serious group	Managed during or soon after the operation
Lens implant power error or dislocation	Uncommon	Glasses, or a second procedure
Endophthalmitis (infection inside the eye)	Rare	Emergency; urgent treatment protects vision
Retinal detachment	Rare	Emergency surgery
Suprachoroidal hemorrhage	Very rare	Can threaten sight

Two patterns stand out. First, the common problems are the mild ones. Second, the rare problems share a feature: they announce themselves with sudden pain, sudden vision loss or new flashes and floaters, which is why the “when to call” section later in this article matters as much as any other.

Posterior capsule opacification: the most common complication explained

Months or years after a textbook operation, the fog can creep back. People often assume the cataract has “regrown”. It has not. The capsule left behind to hold the implant has clouded, a condition called posterior capsule opacification, or PCO. Residual lens cells migrate across the back of the capsule and form a frosted layer, so light reaching the retina is scattered exactly as it was before surgery.

The NHS describes PCO as the most common complication of cataract surgery, with blurring that develops gradually rather than overnight. The Mayo Clinic notes that it is sometimes called a secondary cataract, which is the source of much confusion.

The treatment is a YAG laser capsulotomy: a laser is used, through the pupil, to open a small central hole in the cloudy membrane. It is an outpatient procedure that takes minutes, requires no incision, and vision typically clears within a day or two according to the Mayo Clinic. The laser itself carries small risks, including a brief rise in eye pressure and, rarely, retinal swelling or detachment, so it is offered when the cloudiness affects daily life rather than as a routine add-on.

Why does PCO deserve its place at the top of this list? Not because it is dangerous, but because it is the complication most people will actually encounter, and because it is widely misunderstood. If your vision slowly dims a year or more after surgery, the likeliest explanation is a cloudy capsule, not a failed operation, and it is one of the most straightforward problems in eye care to treat.

The first days after surgery: swelling, pressure and blurry mornings

Nobody walks out of the operating room with crisp vision. The Cleveland Clinic describes blurriness, mild grittiness, light sensitivity and a red or bloodshot eye as normal in the first few days. The pupil is often still dilated, the cornea is a little waterlogged from the ultrasound energy, and the eye is inflamed from being operated on. These are expected effects rather than complications, and the anti-inflammatory and antibiotic drops your team prescribes are designed to address them.

A short-lived rise in eye pressure is one of the more frequent early findings. The gel used during surgery to protect the cornea can clog the eye’s drainage channels for a day or so, and inflammation itself can push pressure up. Most of the time this settles on its own or with a short course of pressure-lowering drops; your clinician will check it at the first follow-up visit. People who already have glaucoma are watched more closely.

Inflammation that is heavier than expected, sometimes called anterior uveitis, shows up as persisting ache, redness and light sensitivity beyond the first week. It is treated by adjusting the anti-inflammatory regimen, a decision that belongs to the prescribing clinician rather than the patient. A detail worth knowing: the hazy “starburst” halos many people see around lights in the first weeks usually fade as the cornea clears and the brain adapts to the new lens.

The NHS suggests it can take 4 to 6 weeks to recover fully. Patience in those weeks is not passive; it is part of the treatment.

Endophthalmitis after cataract surgery: the infection everyone fears

Endophthalmitis is a bacterial infection inside the eyeball. It is the complication surgeons dread most, because the eye’s interior has almost no defences, and an untreated infection can destroy the retina within days. It is also rare. The NHS lists infection among the serious complications that together affect roughly 1 in 50 operations, with permanent vision loss from any cause in about 1 in 1,000.

Where do the bacteria come from? Usually from the patient’s own eyelids and lashes, which is why surgeons clean the surface with antiseptic before the incision and why most teams give antibiotic drops or an antibiotic injected into the eye at the end of the operation. These precautions have made the infection substantially less common than it was decades ago, but no method eliminates it.

The timing is the key to recognising it. Endophthalmitis typically declares itself between the second and seventh day after surgery, occasionally later. The pattern is a change for the worse after an initial improvement: vision that was clearing becomes cloudy again, the eye becomes painful rather than merely gritty, redness deepens, and the lid may swell. That trajectory, better then suddenly worse, is the signal. A normal recovery moves in one direction.

Treatment is urgent and involves sampling fluid from the eye and injecting antibiotics directly into it, sometimes followed by surgery to clear infected gel from the back of the eye. The sooner this starts, the more vision is protected, which is why every team gives an emergency number at discharge. If you are ever unsure whether what you feel is normal, the correct response is to call, not to wait for the scheduled appointment.

Problems during the operation: capsule tears and dropped lens fragments

Some cataract surgery complications happen on the table rather than afterward. The most significant is a tear in the posterior capsule, the back wall of the bag that is meant to cradle the implant. The capsule is only a few microns thick, and it can rupture when the lens is unusually hard, when the pupil will not dilate, or when the eye is small or deep-set. Dense, mature cataracts, the kind that have been left for years, are a recognised risk factor, which is one reason surgeons prefer not to wait indefinitely.

Behind the capsule lies the vitreous, the clear gel filling the back of the eye. If the capsule tears, vitreous can push forward into the surgical field, and the surgeon switches to a different plan: removing the prolapsed gel, choosing a different implant design or position, and sometimes placing the lens in front of the capsule rather than inside it. The operation takes longer and the follow-up is closer, but many people still end up with good vision.

Occasionally a fragment of the cloudy lens falls backward through the tear into the vitreous, a “dropped nucleus”. A retained fragment can trigger inflammation and raise eye pressure, so it is usually removed in a second operation by a retinal surgeon, often within days to a couple of weeks. The Mayo Clinic lists a dislocated or displaced lens among the recognised risks.

What should a patient take from this? That “serious complication” does not mean “lost eye”. It often means a longer operation, an extra procedure and more appointments. Ask your surgeon how such events are handled where you are treated and whether a retinal specialist is available if needed.

The retina: cystoid macular edema and retinal detachment

The retina is the light-sensing film at the back of the eye, and its centre, the macula, handles reading and face recognition. Two complications involve it, and they could not be more different in severity.

Cystoid macular edema, or CME, is fluid gathering in tiny pockets within the macula, usually a few weeks after surgery. The trigger is inflammation released by the operation itself, which makes the retinal blood vessels slightly leaky. Vision that had cleared becomes blurry or distorted again, straight lines may look wavy, and colours can seem washed out. The Mayo Clinic lists swelling among the known risks of the procedure. People with diabetes, a previous vein blockage in the eye, or a capsule tear during surgery are more prone to it. CME is diagnosed with a retinal scan and usually treated with anti-inflammatory drops, sometimes an injection, with improvement over weeks to months. Most cases resolve; a minority leave some lasting blur.

Retinal detachment is a different animal. The retina peels away from the wall of the eye, cutting off its blood supply, and without prompt surgery vision in that area is lost. It is rare after cataract surgery but more likely in people who are strongly near-sighted, who have had a capsule tear, or who have a family history of detachment. The warning signs are a sudden shower of new floaters, flashes of light like a camera going off in your peripheral vision, or a dark curtain creeping across part of the view. These can appear weeks or months later, long after the routine follow-up.

The practical point is simple. Learn the three warning signs, and treat them as same-day emergencies for the rest of your life, not just in the first week.

The cornea: when the front of the eye stays swollen

The cornea is kept clear by a single layer of pump cells on its inner surface, and those cells do not regenerate. Every cataract operation costs a few of them, mostly through ultrasound energy and surgical manipulation. For most eyes this is irrelevant; the reserve is ample. For eyes that start with a depleted layer, it can tip the balance.

Mild corneal swelling in the first week is routine, and it is a large part of why vision is blurry on the first morning. The Cleveland Clinic describes this early cloudiness as expected, and it generally clears as the pump cells recover their rhythm. Dense cataracts that need more ultrasound energy tend to produce more swelling.

Persistent swelling is a different matter. People with Fuchs endothelial dystrophy, an inherited condition in which the pump cells are weak and sparse, may find the cornea does not clear, or clears slowly over months. In a small number of cases the cornea stays waterlogged and a corneal transplant, often of just that inner layer, becomes necessary. Surgeons check the cornea before surgery and can often predict who is at risk, adjusting technique or counselling accordingly.

A separate corneal complaint is far more common and far less serious: dryness. The incision cuts a few corneal nerves, and the preservative in some drops irritates the surface, so a gritty, watery or stinging eye for several weeks is ordinary. Lubricating drops are often suggested; your team will advise which ones fit alongside the prescribed medicines. Dryness settles for most people as the nerves regrow, which can take a few months.

The lens implant: wrong power, dislocation and unwanted light effects

The implant is chosen before surgery from measurements of the eye’s length and the curvature of the cornea. A small error in those numbers becomes a prescription error, what surgeons call a refractive surprise. Instead of the planned distance focus, the eye may end up mildly near- or far-sighted, or with unexpected astigmatism. Eyes that have had laser vision correction in the past are harder to measure accurately, and surgeons will usually flag this beforehand. The fix is often just glasses; occasionally a lens exchange or a laser touch-up is considered, and that decision sits with the surgeon after the eye has fully settled.

Dislocation is rarer. The capsule holding the lens is anchored by hundreds of fine fibres called zonules, which weaken with age, in pseudoexfoliation syndrome, and after certain eye injuries. If they give way, the implant can tilt or drop, blurring vision suddenly, sometimes years after surgery. The Mayo Clinic lists a dislocated artificial lens among the recognised risks. Repositioning or replacing it requires another operation.

Then there are dysphotopsias, the unwanted light effects. Positive dysphotopsia means glare, halos or arcs of light, especially at night; negative dysphotopsia is a dark crescent in the outer edge of vision. Both arise from light bouncing off the edge of the implant. Most fade over weeks to months as the brain adapts. Multifocal lenses, which split light to give both near and distance focus, trade a little contrast and produce more halos than standard single-focus lenses, which is why they suit some lifestyles and not others. No lens type is universally better; the right choice depends on how you use your eyes and how tolerant you are of night-time glare.

Rare but serious: bleeding, toxic reactions and anesthesia problems

At the far end of the spectrum sit complications most surgeons will see only a few times in a career. They matter because they are the ones that justify the “permanent vision loss” line on the consent form, and because knowing they exist helps you weigh the overall picture honestly.

Suprachoroidal hemorrhage is sudden bleeding from the vessels beneath the retina while the eye is open. Pressure inside the eye can rise abruptly and push its contents toward the incision. It is very rare, more likely in people with high blood pressure, glaucoma, severe near-sightedness or who take blood-thinning medicines, and surgeons manage it by closing the eye quickly. Blood thinners are a frequent worry for patients; the standard advice from eye teams is usually to continue them, because the operation involves minimal bleeding and stopping them carries its own cardiovascular risk. Never alter them on your own; the surgeon and the prescribing physician decide together.

Toxic anterior segment syndrome, or TASS, is a severe sterile inflammation that appears within a day or two, caused by a contaminant on instruments or in fluids rather than by bacteria. It can mimic infection, and distinguishing the two quickly is part of why a next-day check is standard. TASS is treated with intensive anti-inflammatory therapy.

Anesthesia around the eye carries small risks of its own, including bruising, a droopy eyelid that may persist, and, very rarely, injury to the eyeball from the needle or spread of anesthetic affecting the other eye or breathing. Many surgeons now use drops alone, which avoids needles entirely but requires a cooperative, still patient.

The NHS figure of permanent sight loss in around 1 in 1,000 operations captures the combined weight of these events. Low, but worth knowing.

Who is at higher risk of cataract surgery complications, and who is asked to wait?

Risk is not spread evenly. Surgeons grade eyes before the operation, and several features move a case from routine to complex. Knowing which apply to you turns a generic consent form into a personal one.

Eye-specific factors matter most. A very dense cataract needs more ultrasound energy and is harder to break up, which increases the chance of a capsule tear and corneal swelling. A small pupil that will not dilate leaves little room to work. Pseudoexfoliation, a condition in which flaky material weakens the zonules, raises the risk of the capsule shifting. Strong near-sightedness lengthens the eye and increases later detachment risk. Previous eye surgery, trauma, glaucoma or Fuchs dystrophy each add their own considerations. The Johns Hopkins overview notes that other eye conditions can affect the outcome.

One medicine class deserves specific mention. Alpha-blockers, prescribed for an enlarged prostate or high blood pressure (tamsulosin is the best-known generic), can cause intraoperative floppy iris syndrome, in which the iris billows and the pupil shrinks mid-operation. Surgeons have techniques to manage this, but only if they know. Tell your team about every medicine you take or have ever taken for the prostate, and do not stop anything on your own; the effect persists long after the drug is discontinued.

Who is asked to wait? Anyone with an active eye infection or blepharitis, inflamed eyelids, is usually treated first, because surface bacteria are the main source of endophthalmitis. Uncontrolled diabetes, a recent heart attack or stroke, or inability to lie flat may lead to a delay or a change in anesthesia plan. People whose cataract barely affects daily life may also be advised that waiting is reasonable, since surgery is rarely urgent. The decision always rests with the treating team, weighing your eye against your life.

What the days and weeks after cataract surgery usually look like

Recovery has a rhythm, and most of what people call “problems” in the first fortnight are simply the eye following it. Here is the typical arc, with the caveat that your team’s instructions override any general timeline.

Day one: vision is blurry, the eye may ache dully, and light feels harsh. A protective shield is often worn overnight. Many surgeons review the eye the next day or within the first week to check pressure, inflammation and the incision. Days two to seven: vision sharpens noticeably for most people, redness fades, and drops are used on the prescribed schedule. The NHS advises avoiding rubbing the eye, swimming, strenuous exercise, eye makeup and getting soap or water in the eye during the early weeks, and says it can take 4 to 6 weeks to recover fully.

Weeks two to six: the anti-inflammatory drops are usually tapered according to the clinician’s plan, and a review visit checks that inflammation has settled and the implant sits well. This is also the window in which cystoid macular edema would typically appear, so a return of blur after clear vision warrants a call. Glasses, if needed, are usually prescribed once the prescription has stabilised; the Cleveland Clinic notes the eye generally heals over about eight weeks.

Beyond that, a few residual effects are common and usually improve: dryness, mild glare at night, and a sense that the two eyes do not match if only one has been operated on. If the second eye is scheduled, the interval is a clinical decision, often a few weeks, long enough to confirm the first eye is settled and to refine the lens calculation for the second.

What people often get wrong about cataract surgery risks

Myths cluster around this operation, partly because almost everyone knows someone who has had it. Several deserve correcting.

“The cataract can grow back.” It cannot; the natural lens is gone. What people experience is posterior capsule opacification, a clouding of the membrane behind the implant, treatable with a short laser procedure as described earlier.

“Laser cataract surgery has no complications.” Femtosecond laser systems automate some incisions and soften the lens, but the lens still has to be removed and the implant placed in the usual way. Mainstream reviews have not shown a clear reduction in serious complications compared with standard phacoemulsification in experienced hands, so the choice is one to discuss with your surgeon rather than a safety guarantee.

“If I wait until it is really bad, surgery will be safer.” Often the opposite. A very dense cataract requires more energy to remove and raises the risk of capsule tears and corneal swelling. The National Eye Institute frames the decision around how much the cataract interferes with daily activities, not around waiting for ripeness.

“I should stop my blood thinner before surgery.” Cataract surgery involves minimal bleeding, and stopping anticoagulants risks clots elsewhere. Eye teams usually ask patients to continue them. The decision is made jointly by the surgeon and the prescribing physician, never by the patient alone.

“Blurry vision on day one means something went wrong.” Early blur from corneal swelling and a dilated pupil is expected. Vision that improves and then suddenly worsens is the pattern that signals trouble.

“Both eyes are always done at once.” Most surgeons operate on one eye at a time, partly to avoid a rare bilateral infection and partly to refine the second lens calculation. Same-day bilateral surgery is used in selected cases.

Questions to ask your care team before cataract surgery

A good pre-operative consultation is a conversation, not a lecture. The questions below turn general knowledge about cataract surgery complications into information about your eye. Bring a written list; most people forget half of what they meant to ask once the dilating drops go in.

• Is my cataract routine or complex, and which features of my eye make it so?
• Do I have any condition, such as Fuchs dystrophy, pseudoexfoliation, glaucoma or diabetic retinopathy, that changes my risk, and how will you plan around it?
• What type of lens implant are you recommending, and what are the trade-offs in glare, night vision and need for glasses?
• Have my previous laser vision correction or other eye operations been accounted for in the lens calculation?
• Which of my medicines, including anything for the prostate or blood pressure, do you need to know about, and should any be continued or adjusted? Who makes that decision?
• What kind of anesthesia will be used, and what are its specific risks?
• If the capsule tears or a lens fragment drops, how is that handled, and is a retinal specialist available?
• What symptoms should prompt me to call urgently, and what is the number out of hours?
• When are my follow-up visits, and what will be checked at each?
• How long should I wait before driving, working, exercising or flying?
• If I need my other eye done, how far apart will the operations be and why?
• What would you expect my vision to be like without glasses, and what would make you consider the result disappointing?

Pay attention to the tone of the answers as much as the content. A surgeon who readily says “that is uncommon but it happens, and here is what we do” is giving you the honest version. Statistics are useful; a clear plan for when they go wrong is better.

When to call your doctor after cataract surgery

Most of what you feel in the first week is expected. A few things are not, and they share a feature: they represent a change for the worse rather than a slow improvement. Keep the emergency number given at discharge somewhere you can find it without good vision, such as programmed into your phone with a voice label.

Call the same day, without waiting for your scheduled appointment, if you notice any of the following:

• Vision that had been improving becomes cloudier or darker, especially between the second and seventh day
• Increasing pain in or around the eye, particularly pain that is not relieved by the simple pain relief your team suggested
• Deepening redness, a swollen or sticky eyelid, or discharge that is more than watery
• A sudden shower of new floaters, flashes of light, or a shadow or curtain spreading across part of your vision, at any time, even months or years later
• Severe headache with nausea or vomiting alongside a hard, aching eye, which can signal a sharp rise in eye pressure
• Sudden loss of vision in the operated eye

These signs cover the complications that are time-sensitive: infection inside the eye, retinal detachment, a steep pressure rise and bleeding. The NHS advises contacting the surgical team or an eye emergency service promptly if such symptoms appear, because early treatment protects vision in a way that delayed treatment cannot.

Symptoms that are usually not emergencies, but still worth mentioning at your next review, include mild grittiness, watering, glare around lights at night, a dark crescent at the edge of vision, and a feeling that the two eyes do not match. If you are unsure which category your symptom belongs to, call. Eye units would far rather reassure ten people than miss one infection, and no clinician will think less of you for asking.

Frequently asked questions

What are the most common cataract surgery risks?

The most common issues are mild and temporary: blurry vision, grittiness, light sensitivity and redness in the first days, plus a short-lived rise in eye pressure. The most common later complication is posterior capsule opacification, a clouding of the membrane behind the implant. Less frequent problems include retinal swelling, corneal swelling and a lens power that misses the target. Serious events such as infection, retinal detachment and bleeding are rare according to the NHS.

What is posterior capsule opacification and can it be fixed?

Posterior capsule opacification is clouding of the thin capsule that holds the lens implant, caused by residual lens cells spreading across it months or years after surgery. It blurs vision in a way that feels like the cataract returning, although the natural lens is gone. It is treated with a YAG laser capsulotomy, a minutes-long outpatient procedure that opens a central window in the cloudy membrane; vision usually clears within a day or two.

How do I know if I have endophthalmitis after cataract surgery?

The hallmark is deterioration after initial improvement, typically between the second and seventh day: vision becomes cloudier, the eye becomes painful rather than gritty, redness deepens and the lid may swell. Only an eye specialist can confirm the diagnosis by examining and sampling the eye. Because treatment is time-critical, any such change should prompt an immediate call to the surgical team or an eye emergency service rather than waiting for the next appointment.

What recovery problems are normal after cataract surgery and which are not?

Normal early effects include blur, grittiness, watering, mild ache, light sensitivity and halos around lights, all of which generally improve over days to weeks; the NHS says full recovery can take 4 to 6 weeks. Not normal are worsening vision after improvement, increasing pain, thick discharge, new flashes or floaters, a shadow across the view, or severe headache with nausea. Those warrant a same-day call.

Can cataract surgery cause retinal detachment?

Yes, although it is rare. Removing the natural lens changes the mechanics of the vitreous gel, which can tug on the retina and tear it, and the risk is higher in strongly near-sighted people or after a capsule tear during surgery. Detachment can occur weeks to years after the operation. Warning signs are a sudden burst of floaters, flashes of light, or a curtain spreading over part of the vision; these need same-day assessment.

What happens if the capsule tears during cataract surgery?

The surgeon changes plan during the operation: any vitreous gel that has moved forward is removed, and the implant may be placed in a different position or a different design chosen. If a fragment of lens falls into the back of the eye, a retinal surgeon usually removes it in a second procedure. Recovery is closely monitored because retinal swelling and pressure rises are more likely, but many people still achieve good vision.

Is laser cataract surgery safer than standard surgery?

Mainstream evidence has not shown that femtosecond laser-assisted cataract surgery clearly reduces serious complications compared with standard phacoemulsification performed by an experienced surgeon. The laser automates some incisions and softens the lens, but the lens still has to be removed and the implant placed in the usual way, so the same complications remain possible. The choice between techniques is a discussion to have with your surgeon rather than a safety guarantee.

Why is my vision still blurry weeks after cataract surgery?

Several causes are possible and only an examination can distinguish them. Persisting corneal swelling, especially in people with Fuchs dystrophy, clears slowly. Cystoid macular edema, fluid in the central retina, typically appears a few weeks after surgery and causes renewed blur or distortion. A lens power that missed the target leaves a residual prescription. Dryness blurs vision intermittently. Report blur that returns after clear vision, since retinal swelling is treatable when identified.

Do I need to stop blood thinners before cataract surgery?

Usually not. Cataract surgery involves very little bleeding, and stopping anticoagulant or antiplatelet medicines carries a risk of clots, stroke or heart attack, so eye teams generally ask patients to continue them. The decision is made jointly by the eye surgeon and the physician who prescribes the medicine, taking into account the type of anesthesia planned. Never stop, pause or adjust a blood thinner on your own initiative.

Who is more likely to have cataract surgery complications?

Risk is higher with very dense cataracts, small pupils, pseudoexfoliation syndrome, high near-sightedness, Fuchs corneal dystrophy, glaucoma, diabetic eye disease, previous eye surgery or trauma, and in people taking alpha-blocker medicines for the prostate or blood pressure. Active eyelid infection usually leads to a delay until it is treated. Your surgeon assesses these factors beforehand and will explain how they alter your personal risk and the surgical plan.

References

• NHS: Cataract surgery, risks
• NHS: Cataract surgery, recovery
• National Eye Institute (NIH): Cataracts

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.