Laser eye surgery is permanent. LASIK, LASEK, PRK and SMILE all reshape the cornea to correct your prescription, and the cornea keeps that new shape for life — it doesn't regrow or slowly slide back. In the great majority of people the result is stable for decades; long-term studies following patients past ten years show most keep the vision they gained. The catch is that surgery fixes your prescription at one moment in time, and your eyes carry on ageing. From your mid-40s the lens inside the eye stiffens and reading glasses can return — that's presbyopia, not the laser wearing off — and cataracts can develop in later life, exactly as they would have anyway.
Is laser eye surgery permanent?
Yes. The laser removes a precise, microscopically thin layer of corneal tissue to change how the eye focuses light. Once that tissue is gone, it's gone for good, and the cornea holds its new curve. There's no implant to replace and nothing that dissolves or needs redoing on a schedule. In that sense the correction really is a one-off.
Where people get confused is the difference between the correction and the eye. Your surgeon can give you excellent distance vision today, but they can't stop your eyes from getting older. So the honest answer patients deserve is: the surgery lasts, but your eyes keep living their life — and a couple of very ordinary age-related changes can still nudge your vision over the years that follow.
Does laser eye surgery wear off?
Not in the way the phrase suggests. A small number of people do notice some of their old prescription creeping back in the first year or two — this is called regression, and it happens as the cornea and the eye's healing settle. For most low and moderate short-sight it's tiny and never bothers them. It's more likely, and larger, when the starting prescription was very high, because there was more tissue to remove and more healing to do.
Long-sight (hyperopia) corrections tend to be a little less stable over time than short-sight, and very high myopia is the group most likely to see some drift. Even then, "drift" usually means a mild change that's easily topped up or simply lived with rather than a return to square one. If your vision does shift enough to matter, that's what enhancements are for — more on those below.
Wondering how stable your result would be? A suitability assessment measures your cornea and prescription and gives you a realistic picture before you commit to anything.
Book a suitability assessmentWhy reading glasses can still come back
This is the single biggest reason people think their laser surgery "stopped working", and it isn't that at all. Around your mid-40s the natural lens inside your eye loses its flexibility, so focusing on close-up things gets harder. It's called presbyopia, everyone gets it eventually, and it would have happened whether or not you'd had laser treatment. If you had laser surgery in your 20s or 30s for short-sight, your distance vision can still be crisp decades later while you quietly start reaching for reading glasses for menus and phone screens.
The good news is there are ways to handle it. Presbyond laser blended vision sets one eye slightly for near and blends the two, which suits a lot of people who want to stay out of glasses. Monovision does something similar. And in your 50s and beyond, refractive lens exchange — replacing the eye's lens with a modern intraocular lens — corrects reading vision and takes cataracts off the table for good. Your consultant will talk through which fits your eyes and how you actually use them day to day.
Enhancements and top-ups
An enhancement is a second, usually smaller laser treatment to fine-tune a result — either because of regression or because the eye healed a fraction away from target. Rates are low: in most UK series fewer than one patient in twenty needs one, and it's more common at the higher end of the prescription range. When it's needed it's typically done within the first year or two, once vision has fully settled.
Cost is worth asking about upfront, because it varies. Many UK clinics include enhancements within their aftercare for a set period — often the first 12 months, sometimes several years — while others charge separately. It's a fair question to put to any clinic before you book: what's covered, and for how long? Our guide to whether private laser eye surgery is worth the cost goes into what a package should include.
How long it lasts by procedure and by age
The corneal reshaping is permanent across all the main techniques — the differences are in healing and in how each one behaves at the extremes of prescription, not in whether the result "lasts". SMILE, LASIK and surface treatments like LASEK and PRK all give durable results in suitable eyes.
In your 20s and 30s
Distance correction is typically stable for many years. Your prescription should ideally have settled before surgery, which is why most clinics prefer you to be over 18 with a stable prescription for a year or two.
Around 45
Presbyopia arrives. Distance vision from your original surgery can still be sharp, but near tasks may need reading glasses or a blended-vision approach.
60s and beyond
Cataracts may develop with age. Having had laser surgery doesn't prevent cataract surgery later — the two are entirely compatible, though your surgeon uses extra scans to plan the lens power accurately.
If you're weighing techniques, it's really a suitability question rather than a longevity one — compare LASIK, the wider laser eye surgery options, and, for prescriptions outside the laser range, implantable contact lenses (ICL). Over-50s in particular should read lens replacement vs laser eye surgery over 50, because the best "lasts a lifetime" answer at that age is often lens-based.