In short: the Light Adjustable Lens (RxSight LAL+) is a special silicone lens that can be reshaped by light after it is implanted. Once your eye has healed, your surgeon delivers a precise pattern of UV light through a Light Delivery Device over a few short visits, dialling in your prescription — including astigmatism — before a final “lock-in” treatment makes it permanent. It is the most accurate way to hit your target, and especially valuable for eyes that have had laser surgery. Private UK cost in 2026 is typically £4,800–£6,800 per eye, all-inclusive.
What the Light Adjustable Lens is and who it suits
With every other lens, the power is fixed the moment it is implanted and your surgeon relies on pre-operative measurements to predict the result. The Light Adjustable Lens turns that on its head. Its photosensitive material lets the surgeon fine-tune the lens after surgery, once your eye has settled and your true prescription is known — so the outcome is customised to your healed eye rather than to a formula. In trials this delivers a markedly higher chance of landing on your target than a standard premium lens.
That adjustability makes it the strongest option for eyes that have had LASIK or PRK, where ordinary lens-power calculations are notoriously unreliable and often leave residual long- or short-sightedness. It is equally compelling for anyone who simply wants the most precise refractive result, or who has astigmatism that is hard to predict. The newer LAL+ version (UK 2026, now standard) also builds in a modest extended depth-of-focus profile, widening your range of useful vision.
The trade-off is commitment: you must wear protective UV glasses outdoors and in bright light until the lens is locked in, and attend a short series of adjustment visits over 4–6 weeks. People who cannot attend the visits, or who want a one-and-done solution, may prefer a fixed premium lens. Your consultant confirms the right choice after scans.
Your lens options
The Light Adjustable Lens leads on precision and post-laser accuracy. Here is how it compares with the alternatives your consultant may discuss.
Want the most precise result, or had laser eye surgery in the past? A consultant assessment with biometry tells you whether the Light Adjustable Lens is your best route.
Book your assessmentHow the procedure works
There are two stages. First, the surgery: routine day-case cataract surgery under anaesthetic eye drops, around 20 minutes per eye, with same-day discharge. Through a small incision the surgeon removes the cloudy natural lens by phacoemulsification and implants the Light Adjustable Lens into the capsule. From this moment you wear protective UV glasses whenever you are outdoors or in bright light.
Second, the adjustments: after a 17–21 day healing window, your surgeon measures your healed prescription and delivers 2–3 short shaping treatments at the Light Delivery Device — each just 60–90 seconds of targeted UV light that gently reshapes the lens (correcting sphere and up to ±2.00 D of astigmatism). Once you are happy with the result, 2 final lock-in treatments cure the lens permanently and the UV glasses can be put away. The whole adjustment series is completed within 4–6 weeks.
Recovery and what to expect
Day 1
Vision begins to clear. The eye may feel gritty and look slightly red. UV-protective glasses are worn from now until lock-in.
Days 17–21
The eye has healed enough to measure your true prescription. Adjustment treatments begin.
Weeks 4–6
2–3 shaping treatments fine-tune your vision, then 2 lock-in treatments make it permanent. UV glasses are no longer needed.
Long term
Your result is stable and permanent. A quick YAG laser treatment clears any later clouding of the capsule if it develops.
How much the Light Adjustable Lens costs
In 2026 the Light Adjustable Lens (LAL+) in the UK typically costs £4,800–£6,800 per eye, or £9,200–£12,800 for both eyes. The fee is all-inclusive — consultation, biometry, the surgery, the LAL+ lens, all 3–5 light-adjustment treatments, the protective UV glasses and 12 months of aftercare. It sits above other premium lenses because the lens technology is more costly and the adjustment series adds several extra clinic visits per eye — the price you pay for a result customised after surgery rather than fixed at implantation.
The NHS funds cataract surgery with a standard monofocal lens only, so the Light Adjustable Lens is accessed privately. Most major UK insurers (Bupa, AXA Health, Aviva, Vitality, WPA) cover the underlying cataract operation with pre-authorisation; the premium-lens upgrade is normally self-pay. We provide an itemised breakdown to support insurance pre-authorisation. See the full price list or compare with standard cataract surgery.
Light Adjustable Lens FAQs
How much does the Light Adjustable Lens cost privately in the UK in 2026?
Private LAL / RxSight LAL+ surgery typically costs £4,800–£6,800 per eye, or £9,200–£12,800 for both eyes. The fee is all-inclusive: consultation, biometry, the surgery, the LAL+ lens, all 3–5 Light Delivery Device adjustment treatments, the protective UV glasses and 12 months of aftercare.
What is the difference between the original LAL and the new RxSight LAL+?
RxSight LAL+ is the latest version of the Light Adjustable Lens (US 2024 launch, UK 2026 availability). LAL+ adds a built-in extended depth-of-focus profile, so even before adjustment it delivers a wider range of useful vision than the original LAL. Most UK clinics now implant LAL+ as standard.
How does the after-surgery adjustment work, and how many treatments will I need?
After a 17–21 day healing window, most patients need 2–3 short shaping treatments to refine the prescription, then 2 final lock-in treatments to cure the lens permanently. Each visit lasts 20–30 minutes including refraction, with just 60–90 seconds of UV light per treatment. The whole adjustment process is completed within 4–6 weeks of surgery.
Do I really need to wear UV-blocking glasses after surgery?
Yes — until the final lock-in treatment. The lens contains photosensitive material that reacts to UV light, so unprotected sun exposure could cause an unintended adjustment. The UV glasses must be worn whenever you are outdoors or near bright UV sources, including standard window light, and are provided as part of the all-inclusive package.
Is the Light Adjustable Lens right for me if I had LASIK or PRK?
Post-LASIK and post-PRK eyes are one of the strongest indications for the Light Adjustable Lens. Standard biometry struggles to predict the right lens power after laser surgery, often leaving residual long- or short-sightedness. With the LAL the surgeon fine-tunes the result after healing, which is significantly more accurate than relying on pre-operative formulas alone.
Does the NHS or my insurance cover the Light Adjustable Lens?
The NHS funds cataract surgery with a standard monofocal lens only, so the Light Adjustable Lens is accessed privately. Most major UK insurers cover the cataract operation when there is a clinically significant cataract, with pre-authorisation; the premium-lens upgrade element is usually paid privately as a refractive enhancement. We provide an itemised breakdown to support your insurance pre-authorisation.