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Eye Lens Replacement Surgery in Northern Ireland

Long-term vision correction

Optometrist showing a patient a model of the eye before laser eye surgery
  • 23Years in businessHelping people see better
  • 45+Typical age rangeWhen presbyopia sets in
  • Same dayHome after treatmentUnder local anaesthetic
  • 10ClinicsIn Ireland and Northern Ireland

If reading glasses are becoming a regular part of your day, Lens Replacement Surgery may help reduce your dependence on glasses.

Also known as Refractive Lens Exchange, the procedure replaces your natural lens with an artificial lens selected around your prescription, eye health and visual needs.

Because the natural lens is removed, it can no longer develop a cataract.

Permanent lens replacement, with the implant selected around your individual vision and lifestyle.

  • Personalised lens selection
  • World-renowned surgeons
  • JCI Gold Seal accredited

What is Lens Replacement Surgery?

Lens Replacement Surgery is a form of corrective eye surgery in which the natural lens inside the eye is removed and replaced with a clear artificial lens called an intraocular lens, or IOL.

It is also known as Refractive Lens Exchange. The surgical technique is essentially the same as that used in cataract surgery, but Lens Replacement Surgery is performed primarily to reduce dependency on glasses rather than to treat a cataract affecting your sight.

Your natural lens plays an important role in focusing. When you are younger, it is flexible enough to change shape so that you can focus at different distances. As it becomes less flexible with age, close-up vision becomes increasingly difficult, a change known as presbyopia.

Lens Replacement Surgery removes that ageing natural lens and replaces it with an implant with a carefully calculated focusing power. Depending on the type of IOL selected, the aim may be to provide clear vision at one particular distance or to reduce dependence on glasses across several distances.

Smiling Optilase optometrist leaning against a white wall

Lens Replacement Surgery and presbyopia

Presbyopia is the age-related loss of the eye's ability to focus clearly on nearby objects. It commonly becomes noticeable in the mid-40s, when people may find themselves holding menus or phones farther away, needing brighter light to read, or starting to rely on reading glasses.

If you have become dependent on glasses, Optilase premium intraocular lenses may be the solution for you.

What happens during Lens Replacement Surgery?

Lens Replacement Surgery is performed using local anaesthetic, usually in the form of eye drops, so you remain awake while the eye is numbed for a short treatment. The operation is carried out through very small openings at the front of the eye, and you return home on the same day.

  • 01

    Anaesthetic drops are applied

    Your eye is numbed using anaesthetic drops before treatment begins. You remain awake during the procedure, and your clinical team will explain what is happening and help you remain comfortable throughout.

  • 02

    A small opening is created

    Your surgeon makes a very small opening at the edge of the cornea to access the natural lens inside the eye. Modern lens surgery uses small, self-sealing entry points, so stitches are not normally required.

  • 03

    Your natural lens is removed

    The natural lens is carefully broken down and removed through the small opening. A technique called phacoemulsification uses ultrasound energy to soften and remove the lens material while leaving the thin lens capsule in place to support the new implant.

  • 04

    Your personalised lens implant is inserted

    A clear intraocular lens is placed inside the eye in the position previously occupied by your natural lens. Its focusing power and type will have been selected in advance using detailed eye measurements and discussion of your visual priorities. The small entry point normally seals naturally, and you go home the same day with personalised aftercare instructions.

Your Lens Replacement consultation

Lens Replacement Surgery is a permanent procedure, so careful assessment and treatment planning matter. Your consultation establishes whether you are a suitable candidate and, if so, which type and power of lens implant best matches your eyes and your visual priorities. Your assessment may include:

  • A discussion of your current vision and prescription history
  • Detailed near and distance vision testing
  • Assessment of your overall eye health
  • Examination of your natural lens
  • Measurements of the length and shape of your eyes
  • Corneal measurements
  • Assessment of your retina
  • Discussion of your work, hobbies and everyday visual priorities
  • Discussion of how much you currently depend on glasses or contact lenses
  • Recommendation of lens implant options compatible with your eyes and prescription
  • Explanation of expected recovery
  • Discussion of possible side effects and surgical risks
  • Time to ask questions before deciding whether to proceed

Who is suitable for Lens Replacement Surgery?

Lens Replacement Surgery is usually considered from around the age of 45, when presbyopia makes reading and close-up vision more difficult. Suitability is confirmed at your consultation, which looks at your prescription, eye health, any previous eye surgery and how much you rely on glasses day to day.

Not sure whether it applies to you? Our short suitability quiz is the quickest way to find out which treatment is likely to suit your eyes.

It may be an option if:

  • You are around 45 or over
  • Presbyopia is affecting your close-up vision
  • You depend on reading, distance or varifocal glasses
  • Your eyes are otherwise healthy

Benefits of Lens Replacement Surgery

Explore your lens options

Your lens choice will depend on your age, prescription and eye health. This will be confirmed during your consultation.

  • Smiling woman during an eye exam on an iDesign diagnostic machine

    Monofocal and multifocal lenses

    Compare the two main implant designs side by side, including the trade-off between a wider range of clear vision and optical effects such as glare or halos.

    Compare lens types
  • Woman lifting a barbell in the gym after lens replacement surgery

    Phakic IOLs

    Phakic IOLs keep your natural lens in place and add an implant in front of it. They usually suit higher prescriptions or thinner corneas not suited to laser, rather than presbyopia, and are reversible.

    View treatment

Lens implant options and technology

The artificial lens placed inside the eye is called an intraocular lens, or IOL. Rather than one standard lens for everybody, it is selected using measurements of your eyes alongside discussion of your lifestyle and visual goals, so the plan reflects whether your priority is distance vision, reading, computer work or a broader range of everyday activities.

Monofocal lenses

A monofocal IOL provides its clearest focus at one selected distance. It is often set for clear distance vision, in which case reading glasses are generally still required for close-up activities. For some patients a different focusing strategy may be discussed depending on their visual preferences.

Multifocal lenses

Multifocal lenses are designed to provide more than one point of focus, helping reduce dependence on glasses across a wider range of distances. They can also produce more optical side effects than monofocal lenses in some patients, particularly around lights.

Astigmatism-correcting lenses

For suitable patients with astigmatism, a toric intraocular lens may be used to build astigmatism correction into the implant itself. Whether this is appropriate depends on the amount and type of astigmatism and the measurements taken during your assessment.

Our team will discuss whether a multifocal design is appropriate for your eyes, lifestyle and expectations rather than assuming that greater range automatically makes it the better choice.

Lens Replacement Surgery costs

At Optilase, we believe treatment costs should be clear before you make a decision.

Your exact cost depends on the lens recommended after your assessment, so your consultation confirms the figure before you decide anything.

When comparing prices, consider what is included beyond the procedure itself: your assessment, the lens, your follow-up appointments and longer-term care.

View all pricing
  • Lens Replacement Surgery

    From £2,747.50 per eye

    or from £115 per month

    Swaps the eye's natural lens for an artificial one, correcting vision and preventing cataracts.

    • Pre-operative consultation with ophthalmic surgeon
    • Advanced diagnostic scans
    • Surgery
    • Eye care drops
    • Post-operative appointment with refractive optometrist
    • Aftercare appointments included

    Split your payments withhumm

  • Monofocal and Multifocal Lens Replacement

    From £3,247.50 per eye

    or from £136 per month

    Lens options that restore both distance and near vision, reducing reliance on glasses.

    • Pre-operative consultation with ophthalmic surgeon
    • Advanced diagnostic scan
    • Lens Replacement Surgery
    • Eye care drops
    • Post-operative appointment with refractive optometrist

    Split your payments withhumm

  • Phakic IOL

    From £3,247.50 per eye

    or from £136 per month

    An implantable lens placed alongside the natural lens, for higher prescriptions.

    • Pre-operative consultation with ophthalmic surgeon
    • Advanced diagnostic scans
    • Phakic IOL Surgery
    • Eye care drops
    • Post-operative appointment with refractive optometrist

    Split your payments withhumm

Lens Replacement Surgery recovery and risks

Lens Replacement Surgery is a well-established, safe and effective intraocular procedure, but understanding both the expected recovery and the possible risks is an important part of deciding whether treatment is right for you.

Lens Replacement Surgery recovery

Recovery varies from person to person. Your vision may initially appear blurred or fluctuate while the eye heals, and glare, light sensitivity or visual effects around lights can also occur during the early recovery period.

Many patients return to normal everyday activities relatively quickly, although your clinical team will give you individual guidance about work, driving, exercise and other activities. Initial recovery commonly takes several days, while vision may continue to settle beyond this point.

If you have a multifocal lens, your brain may also need additional time to adapt to the way the lens distributes focus across different distances.

You cannot drive home following treatment, and should only resume driving once you have been advised that your vision meets the required standard.

Smiling Optilase ophthalmologist in black scrubs and a surgical cap

Aftercare following Lens Replacement Surgery

Your team will provide personalised aftercare instructions before you leave the clinic. These may include:

  • Using prescribed eye drops
  • Avoiding rubbing the eye
  • Keeping water and potential irritants away from the eye during early healing
  • Advice about showering and swimming
  • Guidance about exercise
  • Advice about returning to work
  • Guidance about eye make-up
  • Advice about driving
  • Attending scheduled follow-up appointments

Follow-up appointments let your clinical team monitor healing, check the position and performance of the lens implant and discuss any visual symptoms you are experiencing.

Lens Replacement Surgery side effects and risks

Temporary side effects following lens surgery can include:

  • Blurred or fluctuating vision
  • Glare or halos
  • Starbursts or other light-scatter effects
  • Sore or irritated eyes
  • Temporary eye redness

These effects often improve as recovery progresses. As with any medical procedure, it is important to understand the possible complications, which may include infection, inflammation, problems with the lens implant, under- or over-correction, retinal complications such as retinal detachment, and the possibility that additional treatment may be needed. Retinal detachment is a particular consideration for younger patients with high myopia, who may already have an increased underlying risk. Your surgeon will discuss the relevant risks with you in advance of surgery.

Meet our surgeons

Our surgeons are selected not only for their exceptional surgical skill but also for their commitment to patient safety and outcomes. Each surgeon at Optilase is highly qualified and experienced in the latest vision correction technologies.

  • Mr Thomas Materman

    Mr Tom Materman received his primary medical degree from the University of Auckland, New Zealand, in 1991. He worked as a locum GP before spending 12 months in Nepal with the Tilganga Eye Institute, part of the Fred Hollows Foundation, committed to providing first-world eye care in third-world countries. He then underwent postgraduate training in Ophthalmology in Wellington, New Zealand. After his training, he gained further Fellowship experience at the West of England Eye Hospital and the glaucoma service of Moorfields Eye Hospital, then completed a two-year refractive surgical fellowship in London with Professor Jan Venter.

    Since 2006 he has been a Fellow of the Royal Australian and New Zealand College of Ophthalmologists. Mr Materman has performed over 30,000 laser vision correction procedures (LASIK and PRK) and has significant experience in other areas of refractive practice such as lens replacement surgery, ICL implantation and cataract surgery. He keeps his knowledge up to date by attending numerous courses and conferences and is enrolled in an approved CPD programme by the Irish College of Ophthalmologists.

    Mr Materman is dedicated to using the most advanced techniques and safest technologies worldwide, and is a member of various professional organisations including the Irish Medical Council, the General Medical Council (UK) and the European Society of Cataract and Refractive Surgeons.

    In his free time he enjoys photography, cooking, and outdoor activities such as mountain biking, road cycling and ocean sports.

  • Mr Mikhail Hernandez

    Mr Mikhail Hernandez is a fully qualified medical practitioner with vast experience in ophthalmology. After graduating Magna Cum Laude, with great distinction, and gaining his Spanish University Medical Degree in 2011, his passion for ophthalmology developed. Becoming a specialist in the field, Mr Hernandez continued his studies in ophthalmology, winning the scholarship of the Congress of the Valencian Society of Ophthalmology in 2016 and becoming a Specialist Doctor of Ophthalmology in 2017.

    Since then Mr Hernandez has completed a number of advanced qualifications in ophthalmology. He is a cornea specialist with experience in both normal and pathological corneal diagnosis and treatment, having performed multiple intricate surgeries such as corneal transplant, keratoconus and pterygium, using advanced technologies including the femtosecond and excimer lasers. He has practised as an ophthalmologist in southern Ireland and in Spain, has performed more than 4,000 cataract surgery procedures, and has gained a vast amount of experience in refractive intraocular lens treatments.

    With a keen interest in cataract and lens replacement care, Mr Hernandez regularly attends and speaks at industry conferences to stay on top of the latest developments in the field, and has shared his findings as a co-author and research participant in a substantial number of medical books, journals and clinical studies both internationally and nationally. He also teaches ophthalmology residents and medical students from Spain and other parts of Europe in the ophthalmology and cornea field.

    On a personal level, Mr Hernandez loves to travel and to spend time with his family. His current favourite pastime is raising his baby.

  • Dr Mehul Damani

    Dr Mehul Damani is an ophthalmic surgeon with extensive specialist training in refractive surgery and is considered a leader in his field by his patients and peers. He is a specialist in LASIK and PRK laser eye surgery, having performed over 19,000 procedures, and has mentored many ophthalmic surgeons during their refractive surgery training.

    He graduated from the University of Mumbai, where he won the Pfizer Medical award and medallion for first place in the final MBBS examination. He then became a Registrar at Grant Medical College and Sir J.J. Group of Hospitals in Mumbai, subsequently completing three years of specialist ophthalmology training with an emphasis on cataract and glaucoma surgery.

    Dr Damani widened his experience as a specialist doctor for Colchester General Hospital NHS Foundation Trust and Southend University NHS Hospital. He gained further specialist training in refractive surgery and was awarded the Certificate in Refractive Surgery (CertLRS) from the Royal College of Ophthalmologists, and has conducted observations in oculoplasty at Moorfields. He has presented many peer-reviewed medical papers and posters for the American Society of Cataract and Refractive Surgery (ASCRS) and the European Society of Cataract and Refractive Surgery (ESCRS).

    Dr Damani is passionate about Indian classical music and loves to travel and explore different cultures and cuisines. He enjoys the process of training new surgeons.

  • Mr Dipak Parmar

    Mr Dipak Parmar completed his medical training at the United Medical and Dental Schools of Guy's and St Thomas's Hospitals in London. He completed his basic surgical training at King's College Hospital in neurosurgery and ophthalmology, after which he passed the FRCOphth examination to become a Fellow of the Royal College of Ophthalmologists. He completed his higher surgical training in ophthalmology and a fellowship in uveitis and medical retina at Moorfields Eye Hospital in London.

    Mr Parmar completed an international clinical fellowship in cornea, external diseases and refractive surgery at the University of Texas Southwestern Medical Center in Dallas, Texas, from 2003 to 2005. As a result of his training and research he has authored over 40 papers in peer-reviewed journals and has written 3 book chapters. He is one of the few eye surgeons in the UK to have undergone state-of-the-art training in refractive surgery in a prestigious clinical fellowship programme in the USA, and one of the first ophthalmology consultants in the UK to offer corneal collagen cross-linking treatment for keratoconus, in both private and NHS settings.

    He was awarded the CCST (Certificate of Completion of Surgical Training) and specialist registration under the General Medical Council in ophthalmology in 2003, and took up the post of consultant ophthalmic surgeon at Barts Health NHS Trust, London, in 2006. He moved on from the NHS in 2017 to further his career as an independent consultant ophthalmic surgeon based in London and Essex, and continues to perform high-volume cataract surgery for independent providers to the NHS on a biweekly basis. He regularly performs lens and laser based vision correction procedures in the United Kingdom and Ireland.

    Mr Parmar was awarded the Fellowship of the Royal Australian and New Zealand College of Ophthalmologists (FRANZCO) in September 2011. In 2023 he spent significant time working in busy private and public hospitals in rural south-west Australia, gaining a high volume of experience in general ophthalmology, cataract surgery, medical retina injections, and glaucoma including selective laser trabeculoplasty and iStent minimally invasive glaucoma surgery (MIGS).

    Mr Parmar has extensive surgical experience with over 15,000 eye surgeries completed to date, including over 10,000 cataract and lens surgeries and over 5,000 laser vision correction procedures.

What our patients say

  • Margaret Mc Clafferty

    I had LASIK done in Dublin after a consultation and follow up in Derry. From the very start, Elizabeth in Derry put me at ease with her approach. Such a warm, helpful way…

    Google Review
  • Shanna Blair

    Lianne is fabulous, great consultation lots of information and lovely to speak to

    Google Review
  • Ben Sheeran

    Fantastic staff. Lianne was really courteous and professional

    Google Review
  • Aline Bortolotti Secco

    I had a great LASIK experience at Optilase Carrickmines and couldn’t be happier with the results. Dr. Tom Materman is incredibly kind, attentive, and made me feel comfort…

    Google Review
  • Luke

    Very good experience throughout. Very helpful and friendly staff and a quick procedure done. Would recommend.

    Google Review
  • Carl Thorne

    Life changing. From the initial consultation to the aftercare, Optilase have been friendly, professional and caring every step of the way. No worry or concern was too sma…

    Google Review
  • Colm Smith

    Very happy with the operation, results and the aftercare

    Google Review
  • Thomas Mielimonka

    Fantastic experience through and through. Fred and the rest of Belfast team were a dream to work with. They explained everything, kept me well informed and honoured the …

    Google Review
  • Sarah Lennon

    Very nice staff. Very patient and accommodating. Made a nervous patient feel less so.

    Google Review
  • Gerard Mcphillips

    Very professional and appointments on time

    Google Review
  • D

    Great team, great experience. Anyone thinking about doing it, do it. Always on the end of the phone if there was any issues. Highly recommend!

    Google Review
  • Jason Farrell

    The entire process was smooth professional and completely stress free, I couldn't be happier with my outcome

    Google Review

Lens Replacement Surgery questions answered

Quick answers to the questions we hear most often about Lens Replacement Surgery at Optilase.

  • Lens Replacement Surgery, also known as Refractive Lens Exchange, is a procedure in which the natural lens inside the eye is removed and replaced with a synthetic intraocular lens. The replacement lens is selected to correct your prescription and, depending on the lens design, may reduce your dependence on glasses for one or several viewing distances.

  • Lens implant surgery is a term used to describe procedures that involve operating within the eye (intra-ocular) rather than on the surface, to either place an artificial implant to correct vision or replace the existing lens of the eye and adjust the prescription at the same time. IOLs are a permanent vision correction solution and will prevent you from ever developing cataracts as you age.

  • While no surgery is completely risk-free, Lens Replacement Surgery is carefully planned to minimise avoidable risk. Our experienced surgeons use detailed pre-operative assessments, precise measurements and modern surgical technology to determine the safest and most appropriate treatment for your eyes.

    Potential complications can include infection, inflammation, retinal problems, issues with the position or power of the lens implant and, rarely, significant loss of vision. Your surgeon will assess your individual risk factors and explain the benefits and risks relevant to you before treatment.

  • The surgical technique is essentially the same: the natural lens is removed and replaced with an artificial intraocular lens. The main difference is why the procedure is being performed.

    Cataract surgery is carried out because the natural lens has become cloudy and is affecting vision. Refractive Lens Replacement is performed primarily to correct the prescription and reduce dependence on glasses, often before a visually significant cataract has developed.

    A further long-term benefit is that, once the natural lens has been removed, a cataract cannot subsequently develop in that lens.

  • Yes, it is a permanent solution to presbyopia, the natural loss of near vision due to age. The natural lens is permanently removed and replaced with an artificial lens implant. The intraocular lens does not break down, wear out or need replacing, and it will never develop cataracts.

    While the implant itself lasts, other parts of the eye can still change as you age, so minor shifts in vision are expected over time.

  • You cannot develop a cataract in a natural lens that has already been removed.

    However, the thin capsule that holds the artificial lens can sometimes become cloudy months or years later. This is known as posterior capsule opacification (PCO) and is different from a cataract returning. If it significantly affects vision, it can usually be treated with a short laser procedure called YAG capsulotomy.

  • A monofocal lens provides one main focal point, while a multifocal lens is designed to provide useful focus across more than one distance.

    A multifocal lens may reduce your overall dependence on glasses, while a monofocal lens usually means using glasses for distances outside its selected focus.

  • Potentially, yes. A monofocal lens normally provides clear focus at one selected distance, while multifocal lens designs aim to reduce dependence on glasses across a wider range of near, intermediate and distance vision. The best option depends on your eye health and visual priorities. No lens design can guarantee complete freedom from glasses for every activity.

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