Information · Laser eye surgery

Considering laser eye surgery? Read this first.

Laser eye surgery transformed refractive correction — but it isn't right for everyone, and the wrong procedure for your eyes is worse than no procedure at all. This guide explains LASIK, SMILE Pro, SILK, SMARTSIGHT and Presbyond in plain English, and tells you honestly when refractive lens exchange (RLE) is the better choice instead.

Is laser right for me? Compare with RLE →

Laser eye surgery reshapes the cornea — the clear front window of the eye — to correct short-sightedness, long-sightedness and astigmatism. It is permanent, day-case, takes ~15 minutes per eye, and costs from approximately £1,800 to £3,500 per eye in the UK depending on procedure. Modern techniques include LASIK, SMILE Pro, SILK, SMARTSIGHT, and Presbyond blended vision. Laser is unsuitable for people over ~45 with developing presbyopia, those with very high prescriptions, thin corneas, severe dry eye, or progressive keratoconus — in those cases, lens-based surgery (RLE or ICL) is usually a better option.

How laser eye surgery works

The cornea is responsible for about two-thirds of the eye's focusing power. Reshaping its surface by even microns changes how light hits the retina, correcting refractive error. All modern laser procedures use an excimer laser (or, in SMILE and SILK, a femtosecond laser alone) to remove tissue with sub-micron precision in a procedure that takes seconds of actual laser time.

Surgery is performed under topical anaesthetic (eye drops only). You're awake, hold your gaze on a target, and feel pressure but no pain. Vision is hazy for hours, clears within 24–48 hours, and stabilises over weeks. Most people return to driving within 24–48 hours and to office work within 1–2 days.

Is laser right for you?

Suitability for laser depends as much on what your eyes aren't as what your prescription is. Use this honest checklist:

Good fit

Laser likely suits you if…

  • You're aged 21–40 (ideally under 45)
  • Prescription has been stable for 2+ years
  • Myopia between -1.00 and -8.00 dioptres
  • No significant dry eye
  • Corneal thickness above ~500µm
  • No keratoconus risk on topography
  • You don't yet need reading glasses
Better alternative

Consider RLE instead if…

  • You're 45 or older (presbyopia developing)
  • Reading glasses needed for close work
  • Prescription higher than -8.00 or +4.00
  • Early cataract changes on scan
  • You want lifetime vision correction
  • Family history of cataracts
Learn about RLE →
Not suitable

Avoid laser if you have…

  • Active or progressive keratoconus
  • Thin cornea (under 480µm)
  • Severe dry eye disease
  • Unstable prescription
  • Pregnancy (defer 6 months post)
  • Uncontrolled diabetes or autoimmune disease

Not sure which category you're in? A proper suitability assessment includes corneal topography, pachymetry, pupil measurement and dry eye screening. Without those scans, no honest surgeon will commit you to a procedure.

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The five modern laser procedures

Marketing language muddles the field, but there are really five distinct techniques in mainstream UK practice. Each suits different eyes:

LASIK

The original modern laser procedure (Laser-Assisted In-Situ Keratomileusis). A femtosecond laser creates a thin corneal flap; an excimer laser reshapes the underlying stroma; the flap is repositioned. Pros: 30+ years of evidence, fastest recovery (most patients see well within hours), broad prescription range. Cons: The flap is a permanent structural change — contact sports and trauma risk. Topography-guided LASIK (Contoura) tailors the correction to each eye's irregular surface map. Full LASIK guide → · Read about Contoura LASIK →

SMILE Pro

Small-Incision Lenticule Extraction. No flap — the surgeon uses a femtosecond laser only to cut a lens-shaped piece of tissue (lenticule) inside the cornea, then removes it through a 2–4mm keyhole incision. Pros: No flap means stronger cornea, less dry eye, better for active patients. Cons: Currently limited to myopia and astigmatism (not long-sight); slightly slower visual recovery than LASIK. Full SMILE guide → · Read about SMILE Pro →

SILK

Smooth Incision Lenticule Keratomileusis. The newest lenticule technique, using a different laser platform (ELITA) and a more refined lenticule shape than SMILE. Pros: Smoother stromal surface for faster visual recovery; reported lower dry eye incidence. Cons: Newer — fewer years of follow-up evidence. Currently myopia and astigmatism only. Read about SILK →

SMARTSIGHT

Zeiss's next-generation single-laser refractive procedure aimed at very high precision keyhole correction. Conceptually similar to SMILE but with software-driven optimisation for individual corneal biomechanics. Read about SMARTSIGHT →

Presbyond Laser Blended Vision

A LASIK variant specifically for the 40–55 age group with developing presbyopia. The dominant eye is corrected for distance with a slight bias to intermediate; the non-dominant eye is corrected for near with a slight bias to intermediate. The brain blends them. Pros: Glasses-free reading without bifocals, no lens removal. Cons: Some adaptation period; doesn't future-proof you against cataracts the way RLE does. Read about Presbyond →

Laser vs Refractive Lens Exchange (RLE)

For most people in their 40s and 50s researching laser, the more honest conversation is whether RLE is a better fit. Here's the comparison surgeons themselves use:

  Laser eye surgery Refractive lens exchange
Best age21–4045+
Fixes presbyopia?Partially (Presbyond)Yes (trifocal/EDOF IOL)
Prevents future cataract?No — cataracts develop normallyYes — lens already replaced
High prescriptionsUp to ~-8.00 / +4.00Any prescription
Cost (UK 2026)£1,800–£3,500/eye£4,300/eye
Recovery24–48 hours2–4 weeks
Permanent?Yes (vision may shift with age)Yes (lens is forever)

If you're over 45 or have a high prescription — most ophthalmic surgeons will recommend RLE over laser. It costs more upfront but solves more, lasts longer, and removes cataract risk entirely.

Learn about RLE

UK 2026 laser eye surgery cost

Headline prices vary enormously depending on procedure, surgeon experience and clinic. Beware of "from £595 per eye" advertising — that price is almost always for the lowest-prescription monovision-only LASIK and excludes pre-op scans, premium tracking, or any topographic guidance. A realistic UK 2026 range:

  • LASIK: £1,800–£2,800 per eye (Contoura adds £300–£500)
  • SMILE Pro / SILK: £2,400–£3,200 per eye
  • SMARTSIGHT: £2,800–£3,500 per eye
  • Presbyond: £2,800–£3,500 per eye
  • PRK / LASEK (legacy surface laser, longer recovery): £1,500–£2,200 per eye

Most private medical insurers (Bupa, AXA, Aviva, Vitality) classify laser eye surgery as cosmetic and don't cover it.

Frequently asked questions

Is laser eye surgery safe?
Modern laser eye surgery is one of the safest elective procedures performed, with serious complication rates below 1 in 1,000. The most common minor issues are temporary dry eye (resolves in 3–6 months) and night-time glare (usually resolves within a year). Picking a surgeon with high case volume and modern equipment matters more than the specific technique.
Why are private surgeons often steering me toward RLE?
If you're over 45 and being told RLE is more appropriate, that's usually correct advice, not upselling. Laser only corrects the corneal surface; if you're developing presbyopia (need for reading glasses) the cornea isn't the problem — your lens is. Laser may give you 5–10 years of distance vision but won't address presbyopia or future cataracts. RLE solves both in one operation.
What's the difference between LASIK and SMILE?
LASIK creates a thin corneal flap to access the underlying tissue, then reshapes that tissue with an excimer laser. SMILE uses only a femtosecond laser to cut a lens-shaped piece of tissue inside an intact cornea, then removes it through a small incision. SMILE preserves more corneal biomechanical strength and causes less dry eye, but recovery is slightly slower and it can't correct long-sightedness.
Can laser eye surgery wear off?
The corneal reshaping itself is permanent. However, your eyes continue to change — you'll still develop presbyopia in your 40s and cataracts later in life. So while the laser correction lasts, your vision may not stay perfect forever. This is the strongest argument for RLE if you're already 45+.
How do I know if a surgeon is good?
Look for: FRCOphth or equivalent fellowship; high case volume (1,000+ procedures per year); UK GMC registration; published outcomes data; modern equipment (femtosecond + excimer or femtosecond-only platforms updated within last 5 years). A consultation that pushes hard for an immediate decision is a red flag — reputable refractive surgeons want you to take the data away and decide.

Register your interest

We currently partner with consultant-led clinics across South England for cataract, refractive lens exchange, oculoplastic, glaucoma and retinal surgery. Laser eye surgery is delivered by specialist refractive clinics we do not yet have a partnership with.

If you'd like us to notify you when a vetted laser clinic in your area joins our network, leave your details below. We use this list to identify which regions and procedures have enough patient demand to bring a clinical partner on board.

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Looking to book now? If you're 45+ and researching laser because of reading vision changes, RLE is almost certainly the right operation for you — and we do book RLE directly. Visit the RLE page →

Already 45+ and researching laser?

Refractive lens exchange is the lens-based alternative that handles presbyopia, future-proofs against cataracts, and is consultant-led at our South England clinics from £4,300 per eye.

Updated on 11 Jun 2026