Contact Lenses, Glasses or Laser Surgery: When Contacts Are the Sensible Next Step

The rain started halfway across the car park, and by the time she reached the door her glasses were two blurred discs of streetlight. She dried them on her sleeve, which made it worse, and thought the thought that thousands of people think every week: there has to be a better way than this. Her sister had laser surgery two summers ago and will not stop mentioning it. A colleague swears by daily disposables. The optician mentioned both, briefly, before the appointment ran out of time.

So the question becomes contact lenses or laser eye surgery, with glasses as the thing you already know. It feels like a lifestyle choice, and partly it is. But underneath sits a medical decision with real trade-offs: a device you remove every night versus a change to the shape of your cornea that cannot be taken back.

This explainer walks through how each option works, who tends to be steered toward which, and why for a lot of people the quiet, reversible middle step turns out to be the wise one.

What does choosing between contact lenses or laser eye surgery actually decide?

Every option on the table is aimed at the same problem: a refractive error, which simply means the eye bends light so the sharpest image lands slightly in front of or behind the retina, the light-sensing layer at the back, rather than exactly on it. Nearsightedness (myopia) blurs the distance. Farsightedness (hyperopia) strains near focus. Astigmatism comes from a cornea shaped more like a rugby ball than a football, smearing focus in one direction. Presbyopia is the gradual stiffening of the eye’s internal lens that makes reading harder from around age 40 onward. The National Eye Institute describes these as the most common vision problems in the world, and all four are optical faults rather than diseases.

That reframes the decision. Glasses, contact lenses and laser surgery do not compete on whether they can produce a focused image; a well-made spectacle lens, a properly fitted contact and a well-planned laser treatment are all designed to land light on the retina. Where they differ is everything surrounding that image: how reversible the correction is, how much daily effort it demands, what risks it carries, and how gracefully it copes when the prescription shifts, as it tends to in the late teens and again in midlife.

None of them treats disease at the back of the eye. Someone with early glaucoma or diabetic changes in the retina needs exactly the same monitoring whether they wear frames or had a laser procedure years ago. So the honest question is not which option is best, but which fits this stage of this person’s life. The sections that follow take that question one option at a time.

How do glasses, contacts and laser surgery each bend light?

Start with the cornea, the clear dome at the front of the eye. It does roughly two-thirds of the eye’s focusing; the lens inside the eye fine-tunes the rest. Every method of correction works by nudging the total bending power of that system by a few diopters, the unit opticians use for focusing strength.

Glasses do it from a distance. A spectacle lens sits about 12 millimeters in front of the eye and pre-bends light before it ever reaches the cornea. That gap is why strong glasses make the world look slightly smaller or larger, and why the edge of a frame creates a ring of uncorrected vision at the periphery.

Contact lenses do the same job at the surface. A soft lens floats on the tear film and moves with the eye, so the correction follows your gaze and there is no frame edge. Rigid gas-permeable lenses hold their own shape and can mask an irregular corneal surface, which is why they are sometimes chosen for astigmatism that soft lenses struggle to correct.

Laser surgery changes the cornea itself. In LASIK, the surgeon lifts a thin hinged flap of corneal tissue, an excimer laser (a cool ultraviolet laser that removes tissue a fraction of a micrometer at a time) reshapes the layer beneath, and the flap is laid back in place. Surface treatments such as PRK skip the flap, remove the outermost layer of cells and reshape the surface directly; those cells regrow over several days. The NHS also describes a newer keyhole laser technique that removes a small disc of tissue through a tiny incision.

Lens-based surgery leaves the cornea alone and works inside the eye, either adding an artificial lens in front of the natural one or replacing the natural lens altogether. Each road reaches the same optical destination. The road is what you are really choosing.

Why contact lenses are often the sensible next step after glasses

The argument, stated plainly: contact lenses are the only option on this list that you can try, adjust and abandon without lasting consequence. That property is worth more than it sounds, for three reasons.

Prescriptions move. Myopia commonly keeps creeping into the early twenties, and a laser treatment planned on a moving target can be undone by the eye’s own growth. Mayo Clinic notes that surgeons generally want a prescription that has held steady for at least a year before considering LASIK, and the NHS advises against surgery while vision is still changing. A contact lens can simply be re-prescribed at the next exam.

Contacts also answer a question no consultation can: do you actually like living without frames? Some people adore it. Others find they miss the slight shelter glasses give from wind and dust, or notice that their eyes feel gritty by late afternoon. Discovering that with a lens you can remove is a far safer experiment than discovering it after an operation.

The practical ceiling is higher than many people assume. Modern soft lenses correct astigmatism, multifocal designs address presbyopia, and daily disposables remove most of the cleaning routine. For a runner who hates glasses bouncing on the bridge of their nose, or a parent fed up with frames knocked off by a toddler, contacts solve the actual complaint without closing any doors.

The counter-argument deserves equal space: contacts are a daily commitment that carries a real infection risk, and the next section does not soften it. For many people, though, that trade-off still marks the most sensible middle ground between the frames they already own and a procedure they are not yet sure about.

What's the downside of wearing contacts?

Contact lenses are medical devices sitting on living tissue, and the CDC is direct about what that means: serious eye infections that can lead to blindness affect up to 1 in 500 contact lens wearers each year, and nearly 1 in 3 wearers report having visited a doctor for a red or painful eye. The condition behind those figures is microbial keratitis, an infection of the cornea.

The largest avoidable driver is sleeping in lenses. CDC data show that wearing lenses overnight raises the risk of eye infection by 6 to 8 times, even with lenses approved for extended wear. Water is the second: showering, swimming or rinsing lenses under a tap exposes the eye to Acanthamoeba, a free-living organism that causes a particularly painful and slow-healing form of keratitis.

Beyond infection, the everyday downsides are quieter. Lenses reduce the oxygen reaching the cornea and can worsen dryness, which is why screen-heavy workers often notice irritation by evening. Some people develop an allergic reaction to protein deposits on the lens surface. Anyone with blepharitis (inflamed eyelid margins), significant dry eye or a dusty workplace may be told that contacts are a poor fit.

There is also a consequence for anyone weighing laser surgery later. Contacts gently mold the cornea, so surgeons typically ask patients to wear glasses full time for a few weeks before pre-operative measurements, and longer after rigid lenses, according to Mayo Clinic. Years of contact wear do not rule surgery out, but they do shape the assessment.

None of this makes contacts unsafe for the roughly 45 million people in the United States who wear them, by CDC estimate. It makes them safe for people who follow the rules, and risky for people who treat them like jewelry.

Who is laser eye surgery usually for, and who is usually asked to wait?

The typical candidate is an adult whose eyes have stopped changing, whose corneas are thick and regular enough to be reshaped, and whose expectations match what the laser can do. The NHS sets the age floor at 18, and Mayo Clinic adds that the prescription should have been stable for at least a year, because a laser can only treat the eye in front of it on the day.

Several groups are commonly asked to wait rather than told no. Teenagers, because myopia often continues into the twenties. Anyone pregnant or breastfeeding, because hormonal shifts temporarily alter the cornea and the prescription; Mayo lists this among the reasons to postpone. People with an active eye infection, recent injury or inflamed lids, until the surface has fully settled. Someone who has just started a medicine known to affect vision, until the effect is clear.

Other conditions push the recommendation away from the cornea altogether. Keratoconus, a disorder in which the cornea thins and bulges into a cone, is a firm contraindication because removing more tissue weakens it further. Thin corneas, very high prescriptions, unusually large pupils, severe dry eye and autoimmune conditions that slow healing all raise the risk profile; for some of these, a lens-based procedure may be discussed instead, and the NHS describes lens surgery as the usual route for high prescriptions or later in life.

Then there is the person over 45 who simply wants to lose their reading glasses. Laser surgery can reshape the cornea, but it cannot restore the eye’s internal lens to its youthful flexibility. The NHS is candid that most people will need reading glasses eventually, regardless of the procedure, and a good surgeon will be equally candid before anyone signs a consent form.

What actually happens during laser eye surgery?

Most people are surprised by how undramatic the day is. Mayo Clinic describes LASIK as usually completed in 30 minutes or less for both eyes, performed awake, with numbing drops rather than a general anaesthetic. You lie back, a soft device holds the eyelids open, and a suction ring is placed on the eye to keep it still. That ring causes a feeling of pressure and a brief dimming of vision, which is normal and expected.

The surgeon then creates the flap, either with a fine blade or, more commonly now, a femtosecond laser (an infrared laser that separates tissue with pulses lasting quadrillionths of a second). The flap is folded back. You are asked to stare at a target light while the excimer laser reshapes the exposed cornea, removing a calculated pattern of tissue thinner than a human hair. Many patients notice a clicking sound and a faint odor during this stage; Mayo mentions both.

The flap is smoothed back into position and adheres on its own within minutes, without stitches. For surface treatments such as PRK, there is no flap: the outer cell layer is removed, the same laser reshapes the surface, and a protective contact lens is placed like a bandage while the cells regrow.

Lens-based procedures look different again. They involve a small incision at the edge of the cornea and either the insertion of a folded artificial lens in front of the natural one or, in lens replacement, removal of the natural lens by ultrasound and insertion of a replacement, the same technique used for cataract surgery.

Whichever route is chosen, someone needs to drive you home, and vision on the first evening is typically blurry and watery rather than sharp.

What do the days and weeks after laser eye surgery usually look like?

The first few hours are the least comfortable. Mayo Clinic describes eyes that itch, burn, feel gritty and water freely, with blurred vision and sensitivity to light. Most surgeons advise going home, closing the eyes and resting; rubbing is the one thing to avoid, because a freshly repositioned LASIK flap can be dislodged. A plastic shield is usually worn at night for the first several nights for the same reason.

A first check is typically scheduled within one to two days, according to Mayo, to confirm the flap is in place and the surface is healing. Many people notice clearer vision by then, though it tends to fluctuate through the day. Surface laser treatments recover more slowly, with a few days of discomfort while the outer cells regrow and vision sharpening over the following weeks.

Over the next month, a few restrictions are common: no swimming, hot tubs or eye makeup for a period set by the surgeon, and care with contact sports. Dry eye is the most frequent complaint. Mayo notes that LASIK temporarily reduces tear production and that dryness can persist for around six months, while the NHS lists glare and halos around headlights, gritty discomfort and small red marks on the white of the eye as side effects that usually settle over weeks to months.

The vision itself keeps changing longer than people expect. Mayo advises that it may take two to three months for the eye to heal fully and the result to stabilize. Night driving is often the last thing to feel normal. That timeline is a typical range, not a promise, and anyone whose recovery departs from it should be guided by their own surgical team rather than by a friend’s experience.

Is LASIK or lens replacement surgery the better option?

Neither, in the abstract. They are built for different eyes and different ages, and a surgeon who offers both will usually steer by two facts: how old you are and how high your prescription is.

Refractive lens exchange (RLE) removes the eye’s natural lens and replaces it with an artificial one, exactly as in cataract surgery, except the lens being removed is still clear. The NHS describes lens surgery as the usual choice for people with prescriptions too high for a laser or for those later in life. The logic is that someone in their fifties or sixties is already losing the lens’s ability to change focus and will eventually develop a cataract; replacing the lens addresses presbyopia and pre-empts the cataract in one step.

Its downside is that it is surgery inside the eye, which laser treatment is not. The risks are the cataract-surgery risks: infection inside the eye, swelling of the retina, clouding of the membrane behind the new lens that may later need a brief laser treatment, and retinal detachment, which is a particular concern in highly nearsighted eyes. Multifocal replacement lenses, chosen to reduce dependence on reading glasses, can also produce halos and a loss of contrast that some people find hard to adapt to.

LASIK, by contrast, leaves the inside of the eye untouched and keeps the natural lens’s remaining focusing ability. Its weaknesses are the corneal ones already covered: dry eye, night glare, the limits of corneal thickness, and no answer to presbyopia beyond compromise strategies.

Put bluntly, a healthy 28-year-old with moderate myopia and a healthy 62-year-old with early reading trouble are not choosing between the same two procedures. The right question for the care team is which of these is designed for an eye like mine.

What are the downsides of implantable contact lenses?

An implantable contact lens, known clinically as a phakic intraocular lens, is a thin artificial lens placed inside the eye in front of the natural lens, which stays in place. The NHS lists it among the lens surgery options, generally for younger adults whose prescriptions are too strong, or whose corneas too thin, for laser reshaping. The name is a little misleading: it is not a contact lens you handle, but a surgical implant.

The appeal is clear. The cornea is untouched, so the dry eye and corneal-thickness limits of laser surgery do not apply, and the lens can in principle be removed later. The downsides are the downsides of placing a permanent object inside a healthy eye.

Cataract is the best-documented concern. An implant resting close to the natural lens can disturb its nutrition and encourage clouding earlier than would otherwise occur. Raised pressure inside the eye is another: the implant can interfere with the circulation of fluid, and pressure that stays high risks glaucoma, which is why follow-up includes pressure checks. The cells lining the back of the cornea, which do not regenerate, can be lost gradually if the implant sits too close; long-term monitoring of that cell count is standard.

Sizing is a technical risk in its own right. Measurements of the eye’s internal dimensions guide the implant size, and a lens that sits too tight or too loose may need exchanging. Infection inside the eye is rare but serious, as with any intraocular procedure. Halos and glare are reported, particularly at night.

In short, the implantable route trades corneal problems for intraocular ones, and it suits a specific group rather than the general population. Whether you are in that group is a judgment for a refractive surgeon with your measurements in hand.

Contacts vs glasses vs LASIK: a side-by-side comparison

Laid out together, the options stop looking like a ladder from worst to best and start looking like a set of tools with different grips. The table below summarizes what the preceding sections cover in detail; the risk and timeline notes draw on NHS, Mayo Clinic and CDC guidance rather than on any individual provider’s claims.

Option	How it corrects	Reversible	Daily effort	Main trade-offs
Glasses	Lens in front of the eye	Fully	Low	Fogging, rain, frame edge, sport
Contact lenses	Lens on the tear film	Fully	Daily hygiene and discipline	Infection risk (up to 1 in 500 per year, CDC), dryness, cannot be worn when the eye is sore
Laser surgery (LASIK, surface laser)	Reshapes the cornea	No	None after healing	Dry eye for months, night glare, 2–3 months to stabilize (Mayo), no fix for presbyopia
Implantable lens	Artificial lens added inside the eye	Removable, with surgery	None after healing	Cataract, raised eye pressure, corneal cell loss, lifelong monitoring
Lens replacement	Natural lens replaced	No	None after healing	Intraocular surgery risks, halos with multifocal lenses, usually offered later in life (NHS)

Two patterns stand out. The reversible options demand the most from you every day; the permanent options demand the most from you once, in the decision itself. And the further down the table you go, the more the procedure moves from the surface of the eye to its interior, with a corresponding shift in the kind of complication that matters.

Can contact lenses act as a test drive before laser eye surgery?

In one important way, yes. The single most useful thing a contact lens tells a prospective surgical patient is what their life looks like without frames: how they feel on a run, in a swimming pool with goggles, at a wedding, in a mirror. People who have only ever worn glasses often underestimate how much of their identity is attached to them, and a few months of lenses settles that question cheaply in terms of risk.

Contacts also allow one specific rehearsal that surgeons value. For people in their forties facing presbyopia, one surgical strategy is monovision, in which one eye is corrected for distance and the other left slightly nearsighted for reading. The brain has to learn to accept the mismatch, and not every brain does. Mayo Clinic suggests trying monovision with contact lenses before committing to it with a laser, because a lens trial is reversible and the surgical version is not.

The limits of the test drive are just as important. Contacts cannot reproduce the specific side effects of surgery: the months of dryness, the halos around headlights, the slight loss of contrast some people notice. A happy contact lens wearer is not guaranteed a happy surgical outcome, and nobody should be told otherwise.

There is a practical wrinkle too. Because lenses mold the cornea, the test drive has to stop before the pre-operative measurements, with a glasses-only period that Mayo describes as a few weeks for soft lenses and longer for rigid ones. For someone who has leaned on contacts for a decade, those weeks back in frames can themselves be revealing. Some return to the surgical consultation more certain. Others quietly decide that daily lenses were the answer all along, which is a perfectly good outcome of the exercise.

What people often get wrong about contact lenses or laser eye surgery

Laser surgery lasts for life. It does not, in the sense people mean. The reshaped cornea generally holds, but the eye around it keeps aging. Presbyopia arrives regardless, and the NHS notes that most people will need reading glasses eventually. A small degree of regression toward the original prescription is also recognized, which is why Mayo lists undercorrection and the need for enhancement among possible outcomes.

Contacts are the risk-free choice. They are the reversible choice, which is different. The CDC’s figure of up to 1 in 500 wearers per year developing a serious infection is small for any individual and large across a population, and almost all of that risk is behavioral: sleeping in lenses, water exposure, stretched replacement schedules.

Glasses make your eyes weaker. There is no mainstream evidence for this. Wearing the correct prescription does not accelerate myopia, and leaving it uncorrected does not strengthen anything; it simply leaves you squinting.

Astigmatism rules out surgery. Modern lasers treat astigmatism routinely, as do toric contact lenses. Irregular astigmatism from keratoconus is the exception, and it is the irregularity, not the astigmatism, that excludes the laser.

Laser surgery treats eye disease. It changes focus and nothing else. Glaucoma, macular degeneration and diabetic retinopathy proceed exactly as before, and a person who has had surgery still needs routine eye examinations.

One eye at a time is safer. For LASIK, both eyes are commonly treated in the same session, and there is no evidence-based rule that separating them improves safety for most patients. For intraocular procedures, surgeons often do stage the eyes, for different reasons. Which applies to you is a conversation, not a rule.

If you were asked to wait, you were rejected. Waiting is the most common recommendation for the youngest and the most recently pregnant, and it usually expires.

What matters most for wearing contact lenses safely

The CDC’s guidance on healthy contact lens wear reads less like a list of rules and more like a short list of habits, and the evidence behind each is specific. Three habits do most of the protective work.

Keep lenses away from water. That means removing them before showering, swimming or using a hot tub, and never rinsing or storing them in tap water. Acanthamoeba lives in water, including treated water, and the infection it causes is the one eye specialists dread most in contact lens wearers.

Do not sleep in them unless a clinician has specifically fitted you for overnight wear and told you to, and even then understand the arithmetic: the CDC puts overnight wear at 6 to 8 times the infection risk of removing lenses at night.

Treat the case as part of the system. Rub and rinse it with fresh solution, leave it open to air dry, and replace it at least every three months, per CDC advice. Topping up old solution rather than discarding it is one of the quietest routes to a contaminated lens.

Around those three sit the obvious ones: wash and dry hands before touching lenses, replace lenses on the schedule you were given rather than when they feel worn, and keep a current pair of glasses so you are never tempted to wear a lens over a sore eye. An annual examination lets the clinician check the cornea for the early oxygen-related changes that a wearer cannot feel.

None of this is onerous. A daily disposable lens, discarded each evening, removes the case and the solution from the equation entirely, which is one reason many clinicians favor them for new wearers. The habits that remain are the ones that take under a minute and prevent most of the harm.

Questions to ask your care team about contacts, glasses and surgery

A good consultation about vision correction should feel like a conversation about your eyes and your life, not a sales presentation about a procedure. The questions below are the ones that tend to surface the information that matters, whichever option is being discussed.

• Has my prescription been stable long enough to make a permanent decision, and how do you know?
• Given my corneal thickness, pupil size and tear film, which procedure is designed for an eye like mine, and which would you rule out?
• If I am over 40, what is your plan for my reading vision, and can I trial that plan with contact lenses first?
• What side effects do most of your patients report in the first three months, and which of mine would make you concerned?
• If the result is under- or over-corrected, what happens next, and does my cornea have enough tissue for an enhancement?
• How will my eyes be followed up over the years, and who do I contact if something changes?
• For contact lenses: which lens type and replacement schedule suits my eyes and my habits, and what would make you take me out of lenses?
• What would you recommend if I were your family member with my exact measurements?

Pay attention to how the answers are framed. Guideline-level advice from the NHS and from Mayo Clinic is careful to describe typical ranges, named risks and the people for whom a procedure is not suitable. A consultation that only describes benefits, or that discourages the glasses-only waiting period before measurements, is giving you less than you are entitled to.

Finally, ask for time. No refractive decision needs to be made in the room, and a clinician confident in their recommendation will be comfortable with you taking it home.

When to call your doctor

Most problems with contact lenses and most recoveries from laser or lens surgery are mild and self-limiting. A small number are not, and the warning signs are similar across all three situations because they point to the same two emergencies: infection of the cornea or the inside of the eye, and detachment of the retina.

If you wear contact lenses, remove the lens and seek same-day care for a red eye that is painful rather than merely irritated, unusual sensitivity to light, discharge, a white or grey spot on the cornea that you can see in the mirror, or vision that is blurred and does not clear when you blink. Keep the lens and case rather than discarding them, because they can help identify the organism. Do not put a lens back in a sore eye to see if it helps.

After laser surgery, contact the surgical team urgently for pain that worsens rather than eases after the first day, a sudden drop in vision after it had been improving, increasing redness or discharge, or any blow to the eye, since a LASIK flap can be displaced by trauma even weeks later.

After implantable lens or lens replacement surgery, add the retinal warning signs: a sudden shower of new floaters, flashes of light at the edge of vision, or a shadow or curtain spreading across part of the visual field. These need assessment within hours, not days.

If you cannot reach your own team, an emergency department or urgent eye clinic is the right place, and it is better to be told it was nothing than to wait. Every decision about treatment, including whether to stop wearing lenses or to change anything prescribed after surgery, rests with the clinicians who know your eyes.

Frequently asked questions

What's the downside of wearing contacts?

The main downside is infection risk: the CDC reports that serious eye infections affect up to 1 in 500 contact lens wearers per year, with sleeping in lenses and exposing them to water the biggest avoidable causes. Lenses also reduce oxygen to the cornea, can worsen dryness and cannot be worn when the eye is sore. Most of these risks fall sharply with daily disposables and consistent hygiene.

Is LASIK a better option than lens replacement surgery?

Neither is better in general; they are designed for different eyes. LASIK reshapes the cornea and suits adults with stable, moderate prescriptions and healthy corneas. Lens replacement swaps the natural lens for an artificial one and is usually offered to older adults or those with prescriptions too high for a laser, according to the NHS. The choice depends on age, prescription and corneal measurements, assessed by a refractive surgeon.

What are the downsides of implantable contact lenses?

An implantable contact lens is a surgical implant placed inside the eye in front of the natural lens. Its recognized downsides are early cataract formation, raised pressure inside the eye that can lead to glaucoma, gradual loss of the non-regenerating cells lining the back of the cornea, sizing problems that may require exchange, and the rare but serious risk of infection inside the eye. Lifelong monitoring is standard.

What is the downside of lens replacement surgery?

Lens replacement is surgery inside the eye, so it carries the risks of cataract surgery: infection inside the eye, retinal swelling, later clouding of the membrane behind the new lens, and retinal detachment, which is a particular concern in highly nearsighted eyes. It also permanently removes the natural lens’s remaining ability to change focus, and multifocal replacement lenses can cause halos and reduced contrast at night.

Contacts vs glasses vs LASIK: which is the safest choice?

Glasses carry essentially no medical risk, which makes them the safest option in the strict sense. Contact lenses are safe when worn as prescribed but carry a small, largely behavior-driven infection risk. LASIK is a one-time surgical risk followed by months of possible dryness and glare, but no daily risk afterward. Which is safest for you depends on how reliably you follow lens hygiene and whether your eyes meet surgical criteria.

How long after laser eye surgery does vision settle?

Many people notice clearer vision within a day or two, but Mayo Clinic advises that it may take two to three months for the eye to heal fully and the result to stabilize. Fluctuating vision, dryness and night-time glare are common during that period, and the NHS describes these side effects as usually easing over weeks to months. Surface laser treatments tend to recover more slowly than LASIK.

Can I have laser eye surgery if I have worn contacts for years?

Usually, yes. Long-term contact lens wear does not rule out surgery, but lenses temporarily change the shape of the cornea, so surgeons ask patients to switch to glasses full time before the pre-operative measurements. Mayo Clinic describes this as a few weeks for soft lenses and longer for rigid gas-permeable lenses. The assessment also checks for any oxygen-related corneal changes from years of wear.

Will laser eye surgery stop me needing reading glasses?

Not on its own. Laser surgery reshapes the cornea to correct distance vision, but presbyopia comes from the stiffening of the lens inside the eye, which the laser does not touch. The NHS notes that most people will eventually need reading glasses regardless. Some surgeons offer monovision, correcting one eye for distance and one for near, which Mayo Clinic suggests trialing with contact lenses before committing.

Is it safe to sleep in contact lenses?

The CDC advises against it unless a clinician has specifically fitted you for overnight wear, and even then the risk is real: sleeping in lenses raises the chance of a serious eye infection by 6 to 8 times. The closed eyelid starves the cornea of oxygen and traps any microbes against its surface. Removing lenses every night is the single most protective habit a wearer can adopt.

Can laser eye surgery be repeated if my vision changes?

Sometimes. A second treatment, often called an enhancement, is possible if the first result is under- or over-corrected or if some regression occurs, but only if enough corneal tissue remains to remove safely. Mayo Clinic lists undercorrection and regression among recognized outcomes. Whether an enhancement is appropriate depends on your corneal thickness and the reason for the change, which your surgical team assesses.

References

• NHS: Laser eye surgery and lens surgery
• CDC: About Contact Lenses and Healthy Wear
• National Eye Institute (NIH): Refractive Errors
• MedlinePlus: Refractive Errors

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.