- Medically Reviewed by: Mr Mfazo Hove, Consultant Ophthalmic Surgeon
- Author: Mr Mfazo Hove
- Published: March 13, 2025
- Last Updated: September 11, 2026
TL;DR: Well-selected laser eye surgery is one of the best-evidenced elective operations available,¹ and it still deserves a balance sheet written by somebody with nothing to hide, because it is surgery on healthy eyes and the cons are real. Readers searching for “The Pros & Cons of Laser Eye Surgery” deserve a detailed account of both sides.
This guide argues eight pros and eight cons properly, shows how the cons differ between procedures, gives the PROWL patient-reported evidence its own section because it is exactly the nuance a sceptical reader deserves, and closes with the patients for whom the cons win. The aim is simple: if we were merely trying to sell you laser, we would not have written this page.
How Laser Eye Surgery Works
For the reader arriving cold: laser eye surgery reshapes the cornea, the clear front window of the eye, using precisely controlled laser energy, so light focuses on the retina without glasses or contact lenses. It treats myopia, hyperopia and astigmatism through several techniques, LASIK, SMILE, PRK and LASEK, matched to the individual cornea, with PRESBYOND® addressing early presbyopia; the inside of the eye, including the natural lens, is untouched. It is a brief day case under anaesthetic drops, and everything below assumes only this paragraph.
Laser Eye Surgery Pros: Eight Benefits, Properly Argued
These laser eye surgery pros should be considered alongside the limitations that follow.
- The satisfaction evidence is exceptional. Decades of world literature report approximately 95% patient satisfaction,¹ and the FDA-partnered PROWL patient-reported studies found dissatisfaction with vision in the low single figures.⁶
- Genuine spectacle independence. Modern platform series report the large majority of eyes achieving 20/20 or better uncorrected with high accuracy to target,² which translates, in life terms, into mornings, sport, rain, swimming and travel without apparatus.
- Rapid recovery with the flap and keyhole techniques. LASIK and SMILE typically restore functional vision within a day or two, among the fastest returns to normal life of any surgery.
- Durability. The corneal correction in well-selected eyes is lasting; small regression occurs in a minority and is what enhancement exists for, and the ageing that eventually changes vision belongs to the lens, not the treated cornea.
- Freedom from contact-lens dependence. Decades of lens wear carry cumulative burdens of their own, dryness, intolerance and infection risk among them; surgery retires that exposure along with the routine.
- Sphere and cylinder together. Astigmatism is corrected in the same treatment as short or long sight, one integrated reshaping computed from your maps, examined fully in Will Laser Eye Surgery Fix Astigmatism?.
- No intraocular surgery. The treatment lives entirely in the cornea: nothing enters the eye, the natural lens is preserved, and the rare-but-serious risk profile of operations inside the eye is simply not purchased.
- Multiple techniques for different corneas. Because the evidence supports different profiles for different procedures,³ a full-range practice can match thin corneas to surface treatment, suitable eyes to keyhole SMILE, and early presbyopes to blended vision, rather than fitting every eye to one platform.
Laser Eye Surgery Cons: Eight Risks, Clearly Explained
These laser eye surgery cons should be weighed against the benefits above and the patient’s individual measurements.
- Dry eye. The most common aftermath: temporary dryness in the early weeks and months, occasionally persistent, with mechanisms well described in the literature,⁸ which is exactly why a serious assessment examines and treats the ocular surface before surgery rather than discovering it afterwards.
- Glare, haloes and starbursts. Common in the first weeks, usually fading as the eye settles and the brain adapts, persisting longer-term in a minority; one large series recorded night vision complaints falling from 25.6% of patients at one month to 4.7% at twelve months.⁷
- Ectasia. The rare but potentially serious late complication, progressive weakening and distortion of the cornea. Careful pre-operative screening, topography, tomography, pachymetry and honest surface assessment are designed to minimise the risk, although no responsible surgeon should imply biological risk can ever be reduced to zero.⁴
- Enhancement and the refractive miss. A small proportion of eyes end slightly off target and need fine-tuning, a recognised part of refractive care rather than a failure; the real con is the surprise when nobody put the terms in writing. Provider policies vary: enhancement may be included for a defined period, subject to eligibility, charged separately or handled under provider-specific terms; ask to see the written policy before surgery. At Blue Fin Vision®, eligible self-pay patients are covered in full within 24 months under the Enhancement Policy.
- Flap considerations with LASIK. The flap that buys LASIK its fast recovery is a structure to respect: complications are uncommon and usually managed at the time, and early protection matters, which is why contact sport waits and why some lifestyles are steered to flapless techniques instead.
- Slower recovery with the surface techniques. PRK and LASEK trade the flap away at the cost of several uncomfortable, blurred days and weeks to final sharpness, the right trade for particular corneas, but a real one, mapped honestly in Laser Eye Surgery Recovery Time.
- Your lens keeps ageing behind the result. Presbyopia still arrives in the mid-40s and cataract decades later, because those are lens events laser never touches; and a lasered cornea makes the eventual lens calculation more demanding. For the 45-plus reader this con is the pivot of the whole decision, examined in Lens Replacement vs Laser Eye Surgery in Your 40s.
- Not everyone qualifies. Thin or suspicious corneas, very high prescriptions, unstable refractions and significant surface disease all fail an honest screen, and for many screened-out eyes the ICL, correcting vision without removing corneal tissue and with a strong published record,⁵ is the honest alternative rather than the consolation prize.
Which Cons Differ by Procedure?
- Early Visual Recovery: LASIK – fast, typically a day or two; SMILE – fast, typically a day or two; PRK/LASEK – slower, days to weeks.
- Flap: LASIK – yes, protected early, contact sport waits; SMILE – no flap, keyhole incision; PRK/LASEK – no flap.
- Surface Healing: LASIK – minimal surface disturbance; SMILE – minimal surface disturbance; PRK/LASEK – surface layer regrows over days, bandage lens used.
- Early Discomfort: LASIK – usually mild and brief; SMILE – usually mild and brief; PRK/LASEK – more, for the first days.
- Early Dry Eye Tendency: LASIK – most studied, usually temporary; SMILE – generally kinder to corneal nerves; PRK/LASEK – present, usually temporary.
- Typical Fit: LASIK – broad suitability, fast return; SMILE – suitable myopic eyes, active lifestyles; PRK/LASEK – thinner corneas, certain occupations.
What PROWL Actually Taught Us
The PROWL studies deserve their own section, because they are the modern, FDA-partnered, patient-reported answer to the question this whole page asks, and they cut both ways at once. Satisfaction was very high, with dissatisfaction with vision in the low single figures; a substantial minority of patients reported new visual symptoms, glare, haloes, starbursts, in the early months; and importantly, most symptoms did not materially impair ordinary activities.⁶
That triad is exactly the nuanced truth a sceptical patient needs: the operation very reliably delights, it honestly changes night-time optics for a while in many eyes, and the change rarely matters to daily life. A clinic quoting only the first finding is marketing; a critic quoting only the second is scaremongering; this page quotes all three.
When the Cons Outweigh the Pros
A 29-year-old with minus 3.00 and twenty lens-wearing years ahead reads this sheet and the pros win at a canter, if screening passes.
A night-shift driver with minus 5.00 must give cons 2 and 1 real occupational weight: the answer may still be yes, but technique, treatment profile and timing all belong in the conversation, in advance.
A 34-year-old with minus 9.50 and thin corneas is decided by cons 3 and 8: forcing a big correction onto marginal tissue trades away safety margin, and the ICL deserves the first serious look.
A 47-year-old whose real complaint is reading glasses is decided by con 7: the lens, not the cornea, is the diagnosis, and treating the wrong structure is the one con no technique fixes.
So How Should You Weigh It?
Your own balance sheet is written by measurement: corneal maps and thickness, refraction and its stability, surface health, age and lens status, occupation and expectations, all tested against the full range of options. A credible assessment must be capable of ending with a recommendation not to proceed, or to proceed differently.
Book a complimentary laser eye surgery consultation with Blue Fin Vision® to discuss your options with a consultant-led UK team. Appointments are available across London, Hertfordshire and Essex. Bring the Laser Eye Surgery Checklist to Blue Fin Vision® and every other provider you are considering and let your measurements deliver the verdict this page honestly cannot.
References
- Solomon KD, Fernández de Castro LE, Sandoval HP, Biber JM, Groat B, Neff KD, Ying MS, French JW, Donnenfeld ED, Lindstrom RL; Joint LASIK Study Task Force. LASIK world literature review: quality of life and patient satisfaction. Ophthalmology. 2009;116(4):691-701. PMID: 19344821.
- Sandoval HP, Donnenfeld ED, Kohnen T, Lindstrom RL, Potvin R, Tremblay DM, Solomon KD. Modern laser in situ keratomileusis outcomes. J Cataract Refract Surg. 2016;42(8):1224-1234. PMID: 27531300.
- Shortt AJ, Allan BD, Evans JR. Laser-assisted in-situ keratomileusis (LASIK) versus photorefractive keratectomy (PRK) for myopia. Cochrane Database Syst Rev. 2013;(1):CD005135. PMID: 23440799.
- Randleman JB, Woodward M, Lynn MJ, Stulting RD. Risk assessment for ectasia after corneal refractive surgery. Ophthalmology. 2008;115(1):37-50. PMID: 17624434.
- Packer M. Meta-analysis and review: effectiveness, safety, and central port design of the intraocular collamer lens. Clin Ophthalmol. 2016;10:1059-1077. PMID: 27354760.
- Eydelman M, Hilmantel G, Tarver ME, Hofmeister EM, May J, Hammel K, Hays RD, Ferris F 3rd. Symptoms and satisfaction of patients in the Patient-Reported Outcomes With Laser In Situ Keratomileusis (PROWL) studies. JAMA Ophthalmol. 2017;135(1):13-22. PMID: 27893066.
- Pop M, Payette Y. Risk factors for night vision complaints after LASIK for myopia. Ophthalmology. 2004;111(1):3-10. PMID: 14711706.
- Ambrósio R Jr, Tervo T, Wilson SE. LASIK-associated dry eye and neurotrophic epitheliopathy: pathophysiology and strategies for prevention and treatment. J Refract Surg. 2008;24(4):396-407. PMID: 18500091.
ABOUT THE AUTHOR
Mr Mfazo Hove
Consultant Ophthalmic Surgeon
MBChB MD FRCOphth CertLRS
Mr Mfazo Hove is a Consultant Ophthalmic Surgeon with experience spanning more than 57,000 procedures. He completed 6.5 years of specialist training at Moorfields Eye Hospital and served for five years as a consultant at the Western Eye Hospital, Imperial College Healthcare NHS Trust. He is the founder of Blue Fin Vision®, a consultant-led private ophthalmology practice operating across London, Essex, and Hertfordshire. His clinical expertise encompasses advanced cataract surgery, refractive lens replacement, laser vision correction, and implantable Collamer lenses (ICL).
A ZEISS Key Opinion Leader, Mr Hove is a respected international speaker with five invited engagements across seven cities in 2026:
- ZEISS China tour (Changsha, Shanghai, and Hangzhou, April – ZEISS APAC User Meeting)
- RCOphth Annual Congress – May – Manchester
- ZEISS EMEA User Meeting (Istanbul)
- ZEISS Lausanne User Meeting (Lausanne)
- European Society of Cataract and Refractive Surgeons Annual Congress (ESCRS, London)
