Cataract surgery is one of the most frequently performed operations in the world, done tens of millions of times a year.1Lens.com. How Many Cataract Surgeries Are Performed Annually Worldwide? Global Data, Age Demographics, & Success Rates The count is far from evenly spread, though, and where you live shapes whether, and when, you get surgery.2PubMed. Global prevalence of cataract surgery The World Health Organization estimates that about one in two people facing cataract blindness still need access to it.3World Health Organization. One in two people facing cataract blindness need access to life-changing surgery
The Yearly Numbers Worldwide and in the US
Current estimates put the world total at about 28 to 30 million cataract operations a year.4Lens.com. How Many Cataract Surgeries Are Performed Annually Worldwide? Global Data, Age Demographics, & Success Rates An industry estimate for 2022 counted about 30 million worldwide, about 5 million of them in the US.5iOR Partners. The Future of Cataract Surgery The US has about 4% of the world’s people, so it performs roughly a sixth of the world’s cataract operations.
Within Medicare, which covers most Americans 65 and older, yearly operations have leveled off at about 1.4 million.6PubMed. Prevalence, Surgical Trends, and Economic Burden of Cataract in Medicare Population in the United States Black Medicare patients have the lowest surgery rates of any group.7PubMed. Prevalence, Surgical Trends, and Economic Burden of Cataract in Medicare Population in the United States
These figures don’t line up neatly, and the reasons are mundane. Some estimates count eyes while others count people, and most people who have surgery eventually have it in both eyes, so one person can account for two operations. The 5 million US figure covers all ages and insurers, while the 1.4 million covers one insurer’s patients, so the two shouldn’t be set side by side as if they measured the same group. Global totals are built from country reports and estimates that arrive on different schedules, so a world figure blends newer and older data.
For someone scheduled for surgery, that scale means the steps are well rehearsed: a small incision, removal of the clouded lens, and placement of a clear artificial lens. It’s reasonable to ask your surgeon how many cataract operations they do in a year and how often problems occur in their practice. Routine doesn’t mean risk-free, so mention other eye conditions, past eye surgery, or medicines, since these can change how your own case is planned.
Where and How Most Operations Happen in the US
The share of US cataract operations done at ambulatory surgery centers, standalone same-day surgery facilities, rose from about 44% in 2001 to 73% in 2014.8PubMed Central. Trends in Use of Ambulatory Surgery Centers for Cataract Surgery in the United States, 2001-2014 Use varies hugely by area, though, from under 2% in one Wisconsin city to almost 99% in one Colorado city.9PubMed Central. Trends in Use of Ambulatory Surgery Centers for Cataract Surgery in the United States, 2001-2014 So whether you go to a hospital or a surgery center often depends more on where you live than on your eyes. Same-day surgery cuts the cost of each operation, though rising volume can offset those savings overall.10Health at a Glance. Health at a Glance 2025: OECD Indicators
On the day itself, you usually arrive a short time before the operation, get numbing drops or a small injection around the eye, and may get a mild sedative to help you relax. The operation is brief, and you typically go home the same day with no overnight stay. Because of the sedative and the blurred vision or eye patch afterward, you need someone to take you home, and it’s wise to confirm that arrangement when booking. A check-up is commonly scheduled the next day or within the first days, to look at the eye and review your eye drops.
People with complex eye or health problems may be steered to hospitals instead. Your insurer may cover one setting differently from the other, and billing can differ depending on whether a facility is a hospital department or a surgery center, so check before booking.
Why Some Countries Do Far More Than Others
Countries are compared by the number of cataract operations per million people each year. A rate per million lets a small country and a large one be compared fairly, since raw totals would mostly reflect population size. Reported rates range from as low as 36 to as high as 12,800 per million.11PubMed. Global prevalence of cataract surgery In one global comparison, France did about 11,080 per million while the Democratic Republic of Congo did about 78.12Investigative Ophthalmology & Visual Science. Cataract surgical rate and socioeconomics: A Global Study A country’s economic status is the main factor in how many operations are done.13PubMed. Global prevalence of cataract surgery A span that wide points to access to care rather than to how common cataracts are.
Surgeon supply is one limit. More eye surgeons means more operations, up to about 20 ophthalmologists per million people, beyond which adding more makes little difference.14AJO International. Workforce distribution and cataract surgical rates in the eastern mediterranean (EMR) and middle east north Africa (MENA) regions Past that level, other limits take over, such as cost, patient demand and clinic capacity.
Cost is the other big limit. Across African surveys, cost, both the fee and indirect costs like travel, was the most common reason people went without surgery.15PubMed Central. Barriers to Cataract Surgery in Africa: A Systematic Review In Nepal, about a third of people blind from cataract cited cost or feeling they didn’t need better sight, and one in eight cited fear or hard access.16PubMed Central. Barriers to cataract surgeries as perceived by visually impaired 50 years and older cataract blind participants of Nepal survey for rapid assessment of avoidable blindness Providers in South Africa point to few local services, too few eye specialists, and myths that awareness programs don’t address.17Scientific African. Barriers related to the provision of cataract surgery and care in Limpopo province, South Africa: Professional ophthalmic service providers’ perspective
Fear and misconception hold people back anywhere. Fear of eye surgery keeps some people waiting even when it is nearby. Others assume fading sight is a normal part of getting old and not worth treating, so they never ask.
For readers in wealthy countries, the gap shows up in timing. High-rate countries treat cataracts earlier, before they cause blindness, while in low-rate countries many people wait until they can’t see at all. Helping an older relative abroad may mean addressing cost and travel, not just arranging a referral.
Age When Most People Have It
In the US, the middle age at a person’s first cataract operation is about 68.18PubMed Central. Geographic Variation in the Rate and Timing of Cataract Surgery Among US Communities In some US communities it is around 60, and in others nearly 80.19PubMed Central. Geographic Variation in the Rate and Timing of Cataract Surgery Among US Communities Operations rise with age and peak between about 65 and 75, then fall off, especially after 85.20PubMed Central. Investigating the impact of age and sex on cataract surgery complications and outcomes
How early surgery is offered depends partly on local surgeon habits and how many surgeons are available, so two towns can set the bar differently. Some patients ask for surgery sooner because they want to keep driving or working, and surgeons often agree when daily tasks are affected.
Some groups go earlier. People with diabetes develop cataracts more often at younger ages, with the biggest gap at ages 45 to 54.21PubMed Central. Cataract in patients with diabetes mellitus—incidence rates in the UK and risk factors Doctors increasingly operate earlier in diabetes, which helps them see and treat diabetes damage in the back of the eye.22PubMed Central. Cataract in diabetes mellitus Lifetime high sun exposure modestly raises the chance of needing cataract surgery.23PubMed Central. Ultraviolet radiation and incidence of cataracts in a nationwide US cohort Children can also be born with cataracts and need surgery, ideally in the first months of life.
For you, the usual trigger isn’t how the cataract looks on an exam but whether blurry or dim vision is getting in the way of things you need or want to do. Glare from headlights at night is a common reason people go ahead, as are trouble reading and difficulty recognizing faces. If you have diabetes, ask your eye doctor whether earlier surgery makes sense, since a clear lens makes it easier to examine and treat the back of the eye.
Why So Many People Get Both Eyes Done
In Sweden, nearly two thirds of people who had both eyes done had the second within 3 months.24PubMed Central. Ten-year trends of delayed sequential bilateral cataract surgery (DSBCS) in Sweden: a register-based study The typical gap was about 2 months.25PubMed Central. Ten-year trends of delayed sequential bilateral cataract surgery (DSBCS) in Sweden: a register-based study Better sight in the other eye, other eye conditions, or complications after the first operation tend to lengthen the wait.26PubMed Central. Ten-year trends of delayed sequential bilateral cataract surgery (DSBCS) in Sweden: a register-based study Some clinics do both eyes on the same day, which in one middle-income country saved money per patient.27PubMed Central. Cost-Utility Analysis of Immediate Sequential and Delayed Sequential Bilateral Cataract Surgery in a Middle-Income Country
Each approach has trade-offs. With separate days, the surgeon can see how the first eye heals before doing the second, and can adjust the plan if something unexpected happens. Same-day surgery means one trip and a single recovery period, which can suit people who find travel or time off difficult. It is offered less often, and it may not be advised if you have other eye problems that raise the chance of complications. Ask your surgeon which approach they use and why it fits your eyes.
Between the two operations, the eyes can feel mismatched, with one sharp and one blurry. Glasses may not work well until both eyes are done, so plan driving and reading around that temporary imbalance.
What the Operation Does for People
Cataract surgery reduces the risk of falls, eases depression, and lowers social isolation, especially when both eyes are done.28PubMed Central. Cataract Surgery in Cognitive Impairment: Navigating the Accessibility Challenge in European Healthcare It is also one of the most effective and affordable ways to prevent avoidable blindness.29World Health Organization. One in two people facing cataract blindness need access to life-changing surgery In Nepal, expanded surgery helped cut cataract blindness by 70%, with over 300,000 operations a year now.30Cataract & Refractive Surgery Today. Global Cataract Blindness: Our Responsibility and Our Opportunity In the US, the yearly cost to a person of leaving a cataract untreated rose to almost $39,000 by 2021.31PubMed. Prevalence, Surgical Trends, and Economic Burden of Cataract in Medicare Population in the United States
People notice the change in daily life. Colors often look brighter and less yellow, because a clouded lens tints everything slowly and people forget how things used to look. Reading and driving at night usually become easier, since glare and haze are reduced. Many people need weaker glasses afterward, and some need only reading glasses, depending on the type of lens implanted.
Measured by cost per year of healthy life gained, cataract surgery is among the cheaper treatments in medicine, in both rich and poor countries.32PubMed. Global cost-effectiveness of cataract surgery Laser-assisted cataract surgery, an upgrade some clinics offer, has not proven worth its extra cost over the standard method.33PubMed. Cost-effectiveness of femtosecond laser-assisted cataract surgery versus phacoemulsification cataract surgery So you can ask whether the laser option adds real benefit for your eye before paying extra.
Will Demand Keep Growing
Demand is expected to surge as more baby boomers reach 65.34Healio. Cataract surgery projected to rapidly grow in next 10 years in Europe Worldwide coverage rose about 15% over two decades, and is forecast to rise about 8.4% this decade, short of the 30% target for 2030.35World Health Organization. One in two people facing cataract blindness need access to life-changing surgery
Pausing elective surgery during COVID-19 created backlogs of people waiting for cataract operations.36PubMed Central. COVID-19 and cataract surgery backlog in Medicare beneficiaries Surgeons, operating time and clinic space have to grow as fast as demand, and in some places they aren’t.
If you face a wait, ask the office to put you on a cancellation list so you can be called if an earlier slot opens. Ask whether another surgeon or surgery center nearby has a shorter wait, as waits can differ even within the same area. Tell your doctor if worsening sight is affecting driving or causing stumbles or falls, since that may justify moving you up. In the meantime, brighter lighting at home and an updated glasses prescription can make daily tasks easier.