Refractive lens exchange in London

What is refractive lens exchange (lens replacement surgery)?

Refractive lens exchange (RLE), also called lens replacement surgery, removes the natural lens and replaces it with an intraocular lens implant. It uses the same surgical technique as cataract surgery. The main purpose is to reduce dependence on glasses or contact lenses when cataract is not the main reason for treatment.

The implant’s power is chosen using detailed measurements of your eyes. RLE can address long-sightedness, short-sightedness and, with a suitable toric implant, regular astigmatism. Lens choice determines the range of focus after surgery.

Lens replacement for presbyopia and spectacle independence

By changing the eye’s focusing power, RLE can improve vision without glasses. It may make activities such as recognising faces, using a screen or reading more convenient, depending on the implant and the planned focus.

Removing the natural lens means a cataract cannot develop in that lens later. The capsule behind the implant can still become cloudy and may need YAG laser treatment. Other eye conditions can affect future vision.

Who might consider lens replacement?

RLE is often considered after presbyopia has developed, particularly when someone wants less reliance on spectacles or is unsuitable for laser vision correction. Age alone does not determine suitability.

Assessment includes your prescription, corneal measurements, retina, optic nerve and the health of the eye surface. Your occupation, reading habits and night-driving needs also matter. An implant cannot overcome every cause of reduced vision.

For younger people with a clear, flexible natural lens, preserving that lens may be preferable. Alternatives include glasses, contact lenses, laser vision correction and, in selected eyes, an implant placed in front of the natural lens. Choosing no surgery remains a valid option.

What does the procedure involve?

The eye is numbed, and the surgeon removes the lens through a small incision before placing the folded implant in the retained lens capsule. Treatment is usually a day-case procedure under local anaesthesia. Sedation can be considered and is administered and monitored by a consultant anaesthetist.

The plan for one or both eyes, aftercare and recovery is agreed individually. Eye drops and follow-up are required, and you need to allow time for healing and adaptation. Explore anaesthetic options and read about recovery.

Understand the permanent change and the risks.

RLE permanently removes the natural lens and any remaining natural focusing ability. The benefits must justify surgery in an eye that may already see well with glasses.

Risks include infection, inflammation, capsule damage, pressure changes, corneal or retinal swelling, retinal detachment, an unexpected prescription and the need for further treatment. Rarely, vision can be permanently and severely reduced. This list is not exhaustive.

Retinal detachment deserves particular discussion in highly short-sighted or younger patients. Your surgeon will explain your individual risk and whether an alternative would be more appropriate.

All implant types can produce visual phenomena. Trifocal lenses can cause halos, glare and reduced contrast; glasses may still be needed. Further laser treatment, YAG capsulotomy or implant surgery may sometimes be advised, each with its own risks and additional fees where applicable.

Lens replacement surgery: common questions

Your vision correction consultation in London

George Voyatzis FRCOphth is a Consultant Ophthalmic Surgeon at Moorfields Eye Hospital and Moorfields Private. Consultations take place at Moorfields Private, New Cavendish Street in Marylebone, and the Moorfields Private Outpatient Centre on Bath Street in the City Road area.

Your assessment, measurements and visual priorities guide the treatment discussion. View the London consultation locations and meet the practice team. Please confirm your appointment location when booking.

Realistic expectations

Most people are very happy with their vision following surgery. Although every effort is made to achieve the best possible visual outcome, I cannot guarantee that you will be satisfied with your vision following surgery.