Private EVO ICL surgery for high myopia — UK 2026 implantable collamer lens guide

What is the EVO ICL, and how does it correct high myopia?

The EVO ICL is a phakic intraocular lens — ‘phakic’ meaning your natural lens stays in place. It is made by STAAR Surgical from Collamer, a soft, flexible material that combines collagen with a polymer; Collamer is highly biocompatible, blocks ultraviolet light, and is designed so the eye does not recognise it as foreign. The lens is folded and inserted through a tiny incision, then positioned in the posterior chamber — the space just behind the coloured iris and just in front of your own natural lens. There it acts like a permanent contact lens built into the eye, bending light precisely onto the retina to neutralise even very strong short-sightedness.

The key innovation in the EVO generation is the central KS-AquaPORT — a tiny hole in the centre of the lens that allows the eye’s natural fluid (aqueous humour) to flow freely around the lens. With older ICLs, surgeons had to create a separate small hole in the iris (a peripheral iridotomy) beforehand to prevent a dangerous pressure build-up; the central port means that step is generally no longer needed, simplifying the procedure and improving comfort. Visually, the central port is not noticeable.

EVO ICL treats a very wide range of short-sightedness — commonly myopia from around -3 up to about -18 dioptres, well beyond the safe limits of corneal laser surgery — and the EVO Toric version simultaneously corrects astigmatism. Because the lens sits in front of your natural lens, your eye keeps its own focusing ability for as long as that natural lens does, so younger patients retain natural reading focus. Crucially, the ICL does not stop presbyopia: like everyone else, you will eventually need reading glasses with age, and it does not prevent a future cataract. Its defining advantages are its enormous treatment range, the fact that no corneal tissue is removed, and that it is removable and exchangeable — a reassurance laser surgery cannot offer. For comparison with corneal procedures see SMILE pro, SmartSight keyhole laser and Contoura LASIK.

UK 2026 EVO ICL pricing, in detail

Below is a typical UK 2026 private fee structure for EVO ICL at a CQC-registered London clinic. Always ask for a single written all-in price for both eyes that states whether toric lenses and aftercare are included.

See our dedicated ICL cost guide and the general ICL treatment page for more detail. If your prescription or anatomy turns out to suit a different approach, your assessment will set out the alternatives, including SmartSight or SMILE pro for moderate myopia, or refractive lens exchange for older patients with presbyopia.

What a quality UK EVO ICL package should include

Because the ICL is sized to your individual eye, the precision of the measurements is everything. Check that each quote covers the following.

• Consultant refractive surgeon experienced in ICL — A GMC-registered consultant ophthalmologist who implants phakic lenses regularly, not occasionally.
• Anterior segment imaging and sizing — Precise measurement of anterior chamber depth and the dimensions used to choose the correct lens size, the single most important factor for a safe vault.
• Endothelial cell count — Specular microscopy to confirm your cornea has enough endothelial cells to tolerate an intraocular lens long-term.
• Keratoconus and corneal screening — Topography and tomography to rule out conditions that would change the plan.
• Dilated retinal examination — Essential in high myopes, who carry a higher baseline risk of retinal tears and detachment, with treatment of any weak areas beforehand.
• The correct EVO or EVO Toric lens — The named, custom-ordered lens for your prescription and astigmatism included in the price.
• A genuine, willing-to-decline assessment — A clinic that will recommend an alternative if your anatomy is unsuitable, rather than proceeding regardless.
• Defined aftercare with vault and pressure checks — Reviews that confirm the lens is sitting at the right height (vault) and that eye pressure is normal.
• A clear lens-exchange policy — What happens, and at what cost, in the rare event the lens size needs adjusting.
• All medications — Post-operative anti-inflammatory and antibiotic drops included.
• CQC-registered facility and a single written price — An inspected theatre and one all-in figure for both eyes.

Evidence base — what the ICL literature shows

The ICL has been implanted worldwide for more than two decades, and the EVO generation is supported by recent pivotal-trial and long-term data.

• EVO ICL US FDA pivotal trial — The clinical study supporting the US approval of the EVO and EVO+ Visian ICL, reporting strong efficacy, predictability, safety and high patient satisfaction for myopia and myopic astigmatism.
• Long-term Visian ICL outcome studies — Series with 10 years or more of follow-up showing stable refraction, maintained vision and durable safety.
• ICL versus LASIK and SMILE comparisons — Studies in high myopia showing the ICL matches or exceeds corneal laser surgery for quality of vision and patient satisfaction, particularly at higher prescriptions.
• Vault and lens-sizing research — Evidence on achieving the correct vault (the gap between the ICL and the natural lens) to minimise cataract and pressure risk.
• Endothelial cell density studies — Long-term data on corneal endothelial cell counts after ICL implantation, underpinning the pre-operative cell-count requirement.
• Central-port (KS-AquaPORT) studies — Evidence that the central port maintains aqueous flow and removes the need for a peripheral iridotomy in most cases.
• Collamer biocompatibility research — Laboratory and clinical data on the biocompatibility and UV-blocking properties of the Collamer lens material.
• Royal College of Ophthalmologists refractive surgery standards — UK professional standards for the assessment, consent and delivery of refractive surgery including phakic intraocular lenses.

EVO ICL compared with the other options for high myopia

For high short-sightedness in particular, the ICL often has advantages over corneal laser surgery; the right choice depends on your prescription, corneal thickness, anterior chamber depth and age.

• EVO ICL — Best for high myopia and for thin or borderline corneas; removes no tissue, treats a very wide range, is reversible, and tends to give excellent quality of vision — but is intraocular surgery and depends on adequate space inside the eye.
• SMILE pro / lenticule extraction — Flapless corneal laser for low-to-moderate myopia and astigmatism; excellent for suitable prescriptions but limited at higher powers and by corneal thickness.
• SmartSight keyhole laser — Another flapless lenticule-extraction option for moderate myopia and astigmatism; not suitable for the highest prescriptions that the ICL can treat.
• Contoura / LASIK — Flap-based corneal laser; fast recovery and treats astigmatism well, but removes tissue and is limited by prescription strength and corneal thickness.
• LASEK / PRK (surface laser) — Surface ablation for thinner corneas; no flap but a longer, more uncomfortable recovery, and still limited at very high myopia.
• Refractive lens exchange (RLE) — Replaces the natural lens with an implant; usually reserved for older patients with presbyopia, as it removes the natural lens and carries a higher retinal detachment risk in high myopes.
• Glasses and contact lenses — The non-surgical baseline; safe and reversible, but high-prescription lenses can be thick, distorting or hard to tolerate, which is often what drives patients to the ICL.

Who is private EVO ICL surgery the right choice for?

The ICL is ideal for short-sighted adults — especially those with high prescriptions or thin corneas — who have a stable prescription and enough space inside the eye to accommodate the lens safely. Suitability is confirmed only after detailed measurements.

• High myopia — Short-sightedness up to around -18 dioptres, well beyond the safe range of corneal laser surgery, is the ICL’s flagship indication.
• Thin or irregular corneas — People who cannot safely have laser because their cornea is too thin or borderline keep their cornea untouched with an ICL.
• Myopic astigmatism — The EVO Toric lens corrects astigmatism alongside short sight.
• People with dry eyes — Because no corneal nerves are cut, the ICL can suit those who would struggle with dry eye after laser.
• Those who value reversibility — The lens can be removed or exchanged, which reassures people uneasy about the permanence of laser.
• Adequate anterior chamber depth and endothelial count — Enough internal space and a healthy enough cornea to hold the lens safely, confirmed by measurement.
• Stable prescription — A prescription that has been steady, usually for at least 12 months.
• Not suitable: shallow anterior chamber or low endothelial cell count — Where there is not enough space for the lens, or the cornea could not tolerate it long-term.
• Not generally suitable: significant presbyopia as the main problem — The ICL corrects distance vision and does not treat the age-related need for reading glasses, so older presbyopic patients may be better served by lens-based surgery.
• Not suitable: uncontrolled glaucoma, significant cataract or certain eye diseases — Identified at assessment, where another route would be advised.

NHS versus private EVO ICL

Like laser eye surgery, ICL surgery to correct short-sightedness is considered an elective, lifestyle procedure and is not routinely funded by the NHS. The NHS very occasionally funds a phakic lens for specific clinical reasons — for example an extreme prescription with severe difference between the two eyes and contact-lens intolerance — but this is decided individually and is the exception, not the rule. In practice EVO ICL is a private, self-pay procedure.

Because there is no NHS pathway for elective ICL surgery, the meaningful comparison is between private providers rather than NHS versus private. With an intraocular procedure that is sized to your individual eye, the decisive factors are the surgeon’s ICL experience and the precision of the anterior-segment measurements and endothelial assessment — not the headline price. A thorough, consultant-led assessment that is prepared to recommend an alternative is worth far more than a cheaper offer that skips careful sizing. For older patients whose main issue is the age-related loss of near vision, the relevant NHS-overlapping route is eventually cataract surgery rather than an ICL.

Private medical insurance and EVO ICL

Elective ICL surgery for short-sightedness is, like laser vision correction, generally excluded from standard private medical insurance policies such as Bupa, AXA Health, Aviva, Vitality and WPA, because it is treated as a lifestyle rather than a medical procedure. A small number of corporate policies or cash plans offer a fixed contribution or discount towards refractive surgery as an optional benefit, and some employers include an optical-surgery allowance, so it is worth checking your specific policy and any workplace scheme. Cover may very occasionally be considered where a phakic lens is medically indicated for a recognised clinical problem rather than for routine correction, but this is unusual. For almost all patients EVO ICL is self-pay, and the practical way to spread the cost is the clinic’s 0% or low-rate finance rather than insurance. Always confirm any cover in writing before booking.

Risks of EVO ICL surgery

EVO ICL has an excellent safety record and high satisfaction, but it is intraocular surgery and has its own specific risks, several of which the careful measurements and the central port are designed to minimise.

• Cataract formation — If the lens vaults too low and touches the natural lens, a cataract can develop; correct lens sizing makes this uncommon, and a cataract, if it occurred, would be treated with standard surgery.
• Raised eye pressure — A pressure rise can occur, historically from pupillary block (now greatly reduced by the central port) or if the vault is too high; managed with drops or, rarely, lens exchange.
• Endothelial cell loss — A gradual loss of corneal endothelial cells over time, the reason a minimum cell count is required before surgery and is monitored afterwards.
• Incorrect vault needing exchange — Occasionally the chosen lens sits too high or too low and is exchanged for a different size; an uncommon but recognised adjustment.
• Endophthalmitis — A rare but serious intraocular infection; increasing pain, redness and vision loss in the days after surgery is an emergency.
• Night-vision effects — Some glare or halos around lights, particularly early on and with large pupils; usually improving with time.
• Toric lens rotation — An EVO Toric lens can rarely rotate off its axis, reducing the astigmatic correction and occasionally needing repositioning.
• Retinal detachment — High myopes have a higher baseline risk of retinal detachment regardless of surgery; new floaters, flashes or a shadow need urgent review.
• Under- or over-correction — The result may not be exactly on target, occasionally needing glasses, a lens exchange or a laser touch-up.
• Does not stop presbyopia or future cataract — Reading glasses will still be needed with age, and a cataract can still develop later in life.

Recovery and what to expect after EVO ICL

EVO ICL is a quick day-case procedure performed under local anaesthetic (anaesthetic drops, sometimes with light sedation), usually one eye at a time with the second eye a few days to a week or two later. After the eye is numbed, the surgeon makes a tiny self-sealing incision, gently inserts the folded collamer lens through it, and positions it behind the iris in front of your natural lens. The lens unfolds into place. The procedure typically takes around 15-20 minutes per eye, and because the central port maintains fluid flow, a separate iris hole is generally not needed. You go home the same day.

Visual recovery is fast — often one of the quickest in refractive surgery. Vision is usually noticeably clear within hours to the next day, and many people are delighted by how quickly their high prescription is gone. For the first day or two the eye may feel slightly gritty and be sensitive to light, and you may notice some halos around lights at night that settle over the following weeks. You will use anti-inflammatory and antibiotic drops as directed for a few weeks.

Most people return to desk work within a day or two and can drive once they meet the legal vision standard and feel confident. You should avoid rubbing the eyes, swimming, saunas and dusty environments for the period your surgeon advises, and avoid strenuous activity for a short time. Early reviews check the lens vault and your eye pressure to confirm the lens is sitting correctly. The warning signs to act on are increasing pain, increasing redness, worsening vision or new floaters, flashes or a shadow — you will be given a contact route for these. Because the result is stable and the lens is permanent (though removable), no further routine treatment is usually needed, but lifelong eye checks remain sensible, especially as a high myope.

How to choose a London clinic for EVO ICL

With a lens sized to your individual eye, the surgeon’s ICL experience and the precision of the measurements determine the result. Use these criteria.

• High-volume ICL surgeon — A GMC-registered consultant ophthalmologist who implants EVO ICLs regularly and can show audited outcomes.
• Precise anterior-segment measurement and sizing — Modern imaging to size the lens accurately, the key to a safe vault and a good result.
• Endothelial cell assessment — Specular microscopy to confirm the cornea can tolerate the lens long-term.
• Thorough dilated retinal check — Particularly important in high myopes, with treatment of any retinal weak spots beforehand.
• Willing-to-decline assessment — A clinic that recommends an alternative if your anatomy is unsuitable.
• Transparent all-in pricing — A single written price for both eyes, stating whether toric lenses and aftercare are included, with finance explained.
• Clear lens-exchange policy — What happens, and at what cost, in the rare event the vault needs adjusting.
• Structured aftercare — Vault and pressure reviews and an out-of-hours contact route.
• CQC inspection rating — A Care Quality Commission report rated ‘Good’ or ‘Outstanding’ on Safe and Effective domains.
• No high-pressure sales — Time to consider, with no same-day discount pressure.

Frequently asked questions

Methodology and sources

This page is built from peer-reviewed refractive surgery research, regulatory and long-term ICL data, UK professional standards and the practical experience of CQC-registered private refractive services. Prices reflect typical UK 2026 self-pay rates at London clinics at the time of publication.

• EVO and EVO+ Visian ICL US FDA pivotal clinical trial data.
• Long-term (10-year-plus) Visian ICL outcome and patient-satisfaction studies.
• Comparative studies of ICL versus LASIK and SMILE in high myopia.
• Vault optimisation and lens-sizing research for phakic intraocular lenses.
• Endothelial cell density follow-up studies after ICL implantation.
• Central-port (KS-AquaPORT) aqueous-flow and iridotomy-avoidance evidence.
• Royal College of Ophthalmologists professional standards for refractive surgery.
• Care Quality Commission inspection framework for independent refractive surgery providers.

This page is editorial and educational. It is not personalised medical advice. Your suitability for EVO ICL, the choice between an ICL, corneal laser surgery or lens-based surgery, and the risks in your individual case are decisions made between you and a GMC-registered consultant refractive surgeon following a full assessment including anterior-segment imaging and endothelial cell count. Prices are typical UK 2026 ranges at CQC-registered London centres and may vary.

Book your London EVO ICL assessment

If you are highly short-sighted, or have been told your cornea is too thin for laser, the EVO ICL may give you the clear, glasses-free vision you thought was out of reach — without removing any tissue, and with the reassurance that the lens is reversible. The first step is a detailed suitability assessment including anterior-segment imaging and an endothelial cell count. Our consultant refractive surgeons are GMC-registered specialists experienced in implantable collamer lenses, and they will tell you honestly whether EVO ICL is the best option for your eyes or whether a laser or lens-based alternative would suit you better. Call us or use the appointment form to arrange a same-week assessment.

Related reading: ICL treatment guide · ICL cost guide · SmartSight keyhole laser · SMILE pro · Contoura LASIK · Refractive lens exchange