Laser eye surgery has been available as a refractive option for more than thirty years. For people tired of glasses or contact lenses the appeal is obvious, and the safety question, which is almost always the first one asked, deserves a direct answer.
At Eye Surgeons, we are frequently contacted by people asking whether laser eye surgery is right for them. We do not offer laser refractive surgery ourselves, and we do not pretend to. What we offer is a thorough assessment and an expert recommendation about the best path to clear vision, whether that is an implanted lens, refractive lens exchange or a referral to a laser provider where laser surgery is genuinely the right choice. This guide explains how laser surgery works, what the evidence says, who it suits and why a meaningful number of patients who come in asking about laser correction are better served by something else.
What Is Laser Eye Surgery?
Laser eye surgery uses a laser to reshape the cornea, the clear dome at the front of the eye, changing how light is focused onto the retina. Alter the curvature of the cornea and you change the refractive power of the eye. That is how short-sightedness, long-sightedness and astigmatism are corrected.
The most widely known form is LASIK, which creates a thin flap in the outer corneal layer, reshapes the tissue underneath with a laser, then repositions the flap. LASEK and PRK are surface-based procedures that do not involve a flap. SMILE is a newer approach using a different laser technique entirely. All of them remove corneal tissue to correct vision. That shared principle is both what makes them effective and what defines their limits.
Is Laser Eye Surgery Safe?
For appropriately selected patients, yes. It has a well-established safety record, is one of the most commonly performed elective procedures in the world, and decades of outcomes data are available.
Safety depends on patient selection, the specific procedure, the technology used, the surgeon’s experience and the individual characteristics of each patient’s eyes. For patients who are not suitable candidates, the risk picture looks quite different.
What the evidence shows
Large-scale reviews of LASIK outcomes consistently show good visual results and high patient satisfaction rates. Vision-threatening complications are rare in appropriately selected patients.
Side effects are more common than serious complications and should not be minimised. A meaningful proportion of patients experience dry eyes after surgery, in some cases significantly. Glare, halos and starbursts around lights at night are reported by a notable proportion of patients in the weeks following surgery and in some cases persist long-term. A small percentage require an enhancement procedure because the initial result was insufficient.
Patient selection is the critical factor
The safety and effectiveness of laser surgery depends heavily on whether the patient is an appropriate candidate. People with thin corneas, high prescriptions, irregular corneal shape, pre-existing dry eye disease or prescriptions that have not fully stabilised face a higher risk of poor outcomes.
A thorough pre-operative assessment is the foundation of a safe result. It should include detailed corneal mapping, corneal thickness measurement, tear film evaluation and a careful review of prescription history over time. Clinics that cut corners here are where problems tend to arise.
Who Is a Good Candidate?
Laser surgery tends to work best for adults whose prescription has been stable for at least two years, who have sufficient corneal thickness to allow safe tissue removal, who do not have significant dry eye disease and whose prescription falls within the treatable range.
Age is relevant. Laser correction is most straightforward for people in their twenties and thirties whose eyes have fully stabilised. It is not performed on people under eighteen, and it becomes more complicated in older adults as age-related lens changes begin to affect vision, something that often points toward a different treatment approach entirely.
When Laser Surgery Is Not the Right Answer
A significant proportion of people who enquire about laser eye surgery turn out not to be ideal candidates after a proper assessment. The problem is that many people do not know alternatives exist and assume it is laser surgery or nothing.
High prescriptions and thin corneas
Laser surgery removes corneal tissue. The higher the prescription, the more tissue needs to be removed. For people with high levels of short-sightedness, the amount required may exceed what can safely be done while maintaining corneal stability. A lens-based solution is the clinically appropriate choice in those cases.
Age-related lens changes and refractive lens exchange
From the mid-forties onward the lens typically begins losing its flexibility, the condition we call presbyopia and the reason reading glasses become necessary. This is where [refractive lens exchange](link: /refractive-lens-exchange) becomes an important option to understand.
Refractive lens exchange uses the same cutting-edge lens technology developed for cataract surgery, applied at a younger age before a cataract has formed. The natural lens is replaced with a premium artificial lens chosen specifically to match the patient’s visual goals. The result is a permanent, full range of vision without glasses. Because the natural lens has been removed, the patient will also never develop a cataract in that eye, which makes refractive lens exchange a particularly appealing long-term solution for patients in their forties and fifties.
Laser surgery corrects the cornea but leaves the lens unchanged. A patient in this age group who has laser surgery for distance vision may need reading glasses immediately afterwards for close work, and will still develop presbyopia and eventually cataracts in years to come. Refractive lens exchange addresses all of these at once.
In older patients where the lens has already started to cloud, [cataract surgery](link: /cataract-surgery) with a premium lens achieves the same outcome and is covered under different funding pathways.
ICL for younger patients who are not laser candidates
For younger patients who want freedom from glasses but are not suitable for laser correction, [Implantable Collamer Lens surgery (ICL)](link: /icl-surgery) is a well-established procedure and for many patients the first-choice recommendation.
ICL places a small, flexible lens inside the eye, in front of the natural lens, without removing any corneal tissue. It corrects vision without altering the corneal structure, and it is reversible: the lens can be removed if needed, which is a material difference from laser procedures where the tissue change is permanent.
At Eye Surgeons we offer ICL surgery using the EVO ICL and Viva ICL from STAAR Surgical, the leading platforms internationally for this procedure, with an excellent safety profile particularly for high myopia. We also offer a recently available Korean ICL at a more accessible price point. The right choice between these platforms depends on the patient’s prescription, eye anatomy and visual goals.
Vision Correction at Eye Surgeons: What We Offer
Patients attending our [Hamilton](link: /hamilton), [Cambridge](link: /cambridge), [Pukekohe](link: /pukekohe) and [Whanganui](link: /whanganui) clinics will find that every consultation begins with the same question: what does your vision actually need to do? From that starting point, our five fellowship-trained ophthalmologists recommend whatever will give the best long-term result, whether that is ICL, refractive lens exchange, cataract surgery with a premium lens or a referral for laser correction where it is genuinely the right fit.
Our team has performed over 10,000 procedures across our four clinic locations. Outcomes are independently audited, and complication rates are significantly lower than expected based on patient risk profiling. At our most recent credentialling audit by the DAA Group, covering our Hamilton and Whanganui facilities, our use of technology to support patient care was formally commended.
We are a [Rayner Centre of Excellence](link: /lens-options) and hold over 20 premium lens options. For refractive lens exchange and cataract patients, our portfolio includes the Rayner Galaxy full range lens, the Alcon PanOptix Pro, the IC8, the Lentis Comfort (MF15), the Lenstec ClearView 3 (available nowhere else in New Zealand) and custom lenses manufactured in Italy. Most patients also benefit from our [dropless technique](link: /dropless-surgery), meaning no post-operative drops to manage at home, and [bilateral same-day treatment](link: /bilateral-surgery) so both eyes are done in a single visit.
[Pricing](link: /pricing) for all procedures is transparent and published on our website.
Questions to Ask Before Any Vision Correction Procedure
Has a full pre-operative assessment been done, including corneal mapping and tear film evaluation? Has the surgeon explained clearly why you are or are not a candidate for the specific procedure being discussed? What are the realistic outcomes for someone with your prescription and eye profile? What does follow-up look like, and what happens if a retreatment is needed? Are there other procedures that might suit your eyes better?
A good specialist will answer all of these directly. The consultation should arrive at the right procedure for your eyes, not simply confirm the one you came in asking about.
The Right Starting Point
Laser surgery is safe and effective for patients who are good candidates. For patients who are not, refractive lens exchange and ICL surgery exist precisely to fill that gap, and in many cases they deliver better results than laser correction would have done anyway.
If you are considering any form of vision correction surgery, the most useful first step is a comprehensive specialist assessment. To book at our Hamilton, Cambridge, Pukekohe or Whanganui clinics, visit www.eyesurgeons.co.nz or call 0800 CATARACT.
Frequently Asked Questions
Is LASIK permanent? LASIK permanently reshapes the cornea, but the eye continues to change with age. Presbyopia and cataract development occur regardless of prior laser surgery and will affect vision in later years.
What is the minimum age for laser eye surgery?
Most providers require patients to be at least eighteen with a prescription stable for two or more years, and many prefer to wait until the mid-twenties.
Can laser eye surgery correct presbyopia?
A monovision approach, correcting one eye for distance and one for near, is possible with laser surgery. Not everyone adapts to it, and it is a compromise rather than a full solution. Refractive lens exchange, which replaces the natural lens with a premium artificial lens, typically delivers a more complete result for patients whose primary concern is age-related reading difficulty. Refractive lens exchange can restore a full range of vision permanently, without glasses, and without the limitations of a monovision correction.
What is ICL and how is it different from LASIK?
ICL places a corrective lens inside the eye rather than reshaping the cornea. It is reversible, involves no tissue removal and suits patients with high prescriptions or thin corneas who are not laser candidates.
Does Eye Surgeons offer laser eye surgery?
We do not offer laser refractive surgery. We offer ICL surgery, refractive lens exchange, cataract surgery and comprehensive pre-surgical assessment. If your assessment shows laser surgery is the right option, we will tell you that and help you find an appropriate provider.
What is refractive lens exchange, and who is it for?
Refractive lens exchange replaces the natural lens of the eye with a premium artificial lens, using the same technology developed for cataract surgery. It is typically performed on patients in their forties and fifties who want a permanent, full-range vision correction without glasses. Because it removes the natural lens, the patient will never develop a cataract in that eye. It is particularly well suited to patients who are not good laser surgery candidates due to age-related lens changes, and it offers outcomes that laser correction simply cannot match for that age group.
