LASIK results are permanent. The laser physically removes microscopic amounts of corneal tissue to reshape your eye, and that tissue doesn’t grow back. However, “permanent” comes with a caveat: your eyes can still change over time due to aging and other factors, which may gradually shift your vision years after the procedure. The surgery itself takes about 10 to 15 minutes for both eyes, with the laser active for less than a minute per eye.
Why the Reshaping Is Permanent
During LASIK, a surgeon creates a thin flap on the surface of your cornea, then uses a programmed laser to remove precise amounts of tissue underneath. Each pulse of the laser vaporizes a tiny layer of cornea, flattening or steepening its curve to correct how light focuses on your retina. Once that tissue is gone, it’s gone for good. The flap is laid back in place and heals naturally within days.
This is fundamentally different from wearing contacts or glasses, which compensate for your cornea’s shape without changing it. LASIK changes the structure itself, which is why most people maintain clear vision for decades.
How Long the Procedure Takes
The actual time you spend on the surgical table is surprisingly short. Both eyes are typically done in a single session lasting 10 to 15 minutes total. The excimer laser that reshapes your cornea fires for roughly 20 to 50 seconds per eye, depending on how much correction you need. Most of the procedure time is spent on preparation, positioning, and creating the corneal flap.
You’re awake the entire time. Numbing drops eliminate pain, and a small device holds your eyelids open so you don’t need to worry about blinking. Many people are surprised by how fast it goes.
Recovery and Vision Stabilization
Your vision starts improving within hours, though it will be blurry and your eyes may feel scratchy or watery for the first day or two. Most people return to normal activities within a couple of days. Over the first week to one month, your vision continues to stabilize as the cornea heals and settles into its new shape. Final results typically become clear around the three-month mark, though minor fluctuations can continue for up to six months in some cases.
What 10-Year Data Shows
Long-term studies tracking patients for a decade or more after LASIK confirm that the procedure holds up well over time. A major 10-year follow-up found no progressive accumulation of complications. Most issues that did occur, like minor flap irregularities, showed up in the first days to weeks and resolved early.
Current data puts the overall success rate at 96 to 98 percent, with success defined as achieving 20/20 vision or better without glasses. For people with moderate nearsightedness, results tend to be especially stable. Even among patients with severe nearsightedness (over -10 diopters, which is a very strong prescription), 40 percent were able to avoid glasses entirely at the 10-year mark.
When Vision Can Shift After LASIK
The most common reason people think LASIK “wore off” is regression, a gradual return of some nearsightedness or farsightedness over the years. This isn’t the cornea growing back. It’s your eye’s natural tendency to shift, accelerated in some cases by the healing response. Regression tends to happen fastest in the first year and then slows down considerably.
Several factors influence your risk:
- Stronger initial prescription. The more correction you needed, the more likely some regression will occur. People with high myopia see regression rates as high as 89 percent within the first year, though most of this is minor and doesn’t dramatically affect daily vision.
- Age at surgery. Older patients at the time of LASIK have a slightly higher regression risk per year.
- Heavy screen and near work. Prolonged, continuous close-up work (reading, computer use) can roughly double the risk of regression, particularly in younger patients and women.
- Astigmatism. High preoperative astigmatism increases the likelihood of needing a touch-up by nearly fourfold.
Then there’s presbyopia, the age-related loss of close-up focusing that hits virtually everyone in their mid-40s. LASIK corrects the shape of your cornea but can’t prevent the lens inside your eye from stiffening with age. So if you get LASIK at 30 and enjoy perfect distance vision for 15 years, you’ll still likely need reading glasses around age 45. This isn’t LASIK failing; it’s a completely separate process.
Enhancement Procedures
If regression does meaningfully affect your vision, a follow-up procedure (called an enhancement or touch-up) can re-correct it. The surgeon lifts the original flap and applies additional laser reshaping. Studies show these re-treatments are safe and don’t increase the rate of further regression. Around 5 to 10 percent of LASIK patients eventually opt for an enhancement, most commonly within the first few years.
How Modern Technology Affects Longevity
LASIK technology has improved substantially over the past two decades. The shift from blade-based flap creation to femtosecond (all-laser) techniques has made a measurable difference. Centers using femtosecond lasers report that 93 percent of eyes achieve 20/20 uncorrected vision, compared to about 80 percent with the older blade method. The newer approach also produces fewer optical side effects like glare and halos, creates more predictable flaps, and has a smaller impact on the cornea’s structural integrity. That last point matters for long-term stability, because a more structurally sound cornea is less likely to develop problems like progressive thinning over time.
If you’re considering LASIK today, you’re benefiting from a procedure that has been refined across millions of surgeries. The combination of better screening (ruling out patients who aren’t good candidates), better lasers, and better flap creation means outcomes are more predictable and durable than at any previous point.