What Is YAG Laser Capsulotomy?
During cataract surgery, the cloudy natural lens is removed and replaced with an artificial intraocular lens (IOL). The thin, clear membrane that held the natural lens, the posterior capsule, is deliberately left in place to support the new implant. In some patients, this membrane thickens or becomes cloudy over time, a condition known as posterior capsule opacification (PCO), sometimes described informally as a “secondary cataract”. It is not a return of the original cataract.
A YAG laser capsulotomy uses a focused on YAG laser to create a small, precise opening in the centre of the clouded capsule. This allows light to pass cleanly to the retina again. The procedure is:
- non-surgical in the conventional sense, there are no incisions, stitches or needles
- performed as an outpatient appointment, usually within a few minutes
- carried out with anaesthetic eye drops only
- usually needed only once per eye, as the capsule does not grow back across the opening
It is typically recommended once cloudiness is clearly affecting vision or interfering with daily activities, rather than as soon as any early changes are noticed. Your clinician will advise based on your examination and how much your sight is being affected.
Who May Benefit From This Treatment?
Laser capsulotomy may be considered for patients who have previously had cataract surgery and are experiencing a gradual decline in vision that cannot be corrected with glasses. Common symptoms include:
- blurred, misty or “filmy” vision, as though looking through frosted glass
- increased glare or haloes around headlights and street lamps at night
- difficulty reading small print or seeing faces clearly
- reduced contrast, particularly in dim or overcast conditions
- a feeling that the benefit of cataract surgery has slowly worn off
Treatment may also be recommended where cloudiness of the capsule is limiting the view of the retina or optic nerve, which can matter for patients being monitored for conditions such as glaucoma, ocular hypertension or diabetic eye disease.
Not everyone with capsule cloudiness needs laser treatment, and not everyone is suitable. Suitability depends on a full assessment, including the health of the retina and optic nerve, eye pressure, and whether other conditions may be contributing to the change in vision.
Conditions and Problems Treated
- posterior capsule opacification following cataract surgery
- reduced visual clarity or contrast sensitivity after lens implant surgery
- troublesome glare and night-time haloes caused by capsule thickening
- obstructed clinical view of the retina or optic nerve for ongoing monitoring
- capsule changes affecting the performance of premium or multifocal intraocular lenses
Potential Benefits
Where treatment is clinically appropriate, YAG laser capsulotomy may:
- improve clarity of vision, often within a day or two
- reduce glare and light scatter, which may help with night driving
- support a return to reading, screen work, hobbies and confident independence
- restore the visual quality patients experienced after their original cataract operation
- improve the view for ongoing examination and monitoring of the back of the eye
Results vary between individuals. If vision is also limited by another condition, for example macular degeneration, glaucoma-related nerve damage or corneal disease, the improvement from laser treatment may be partial. This will be discussed openly before any decision is made.
Consultation and Assessment
A consultation with Ms Diana Urbaneja usually includes:
- a discussion of your symptoms, previous cataract surgery and general medical history
- a review of current medications, including anticoagulants and eye drops
- measurement of vision and eye pressure
- examination of the front of the eye and the lens implant at the slit lamp
- dilated examination of the retina and optic nerve, and imaging such as OCT where clinically indicated
- a clear explanation of the benefits, risks, alternatives and expected outcomes
Alternatives include continued observation, updating your glasses prescription, or treating a different underlying cause where one is identified. You will have time to ask questions before consenting.
How the Procedure Is Performed
The laser is carried out in a clinic room, not an operating theatre, and you can go home the same day.
- anaesthetic drops are applied, and drops to dilate the pupil may also be used
- you sit at a laser machine similar to the examination microscope, resting your chin and forehead
- a small contact lens may be held gently against the eye to help focus the laser
- short laser pulses create an opening in the cloudy capsule; you may see flashes of light and hear faint clicking sounds
- the treatment itself commonly takes only a few minutes per eye
Eye pressure is often checked afterwards, and anti-inflammatory or pressure-lowering drops may be prescribed for a short period.
Recovery and Aftercare
Most patients notice clearer vision within hours to a few days, although vision can be blurred initially, particularly if the pupil has been dilated. Because of this, you should arrange transport home and avoid driving until your vision has settled and you meet the DVLA vision standards.
- use any prescribed drops exactly as directed
- expect some new floaters, which usually settle over time
- normal activities, reading and screen use can generally resume the same or next day
- a follow-up appointment is typically arranged to check pressure and vision
- a glasses check may be worthwhile once vision has stabilised
Seek urgent advice if you develop worsening pain, a sudden shower of floaters, flashing lights, a shadow or curtain across your vision, or a marked drop in sight. General guidance on eye symptoms is available from the NHS.
01
Consultation
Assessment of the lens capsule
02
Laser
Quick, painless treatment
03
Follow
Vision check
Guide Price
£750 per eye
A single, quick outpatient treatment. See the pricing page for all options.
At a glance
Anaesthetic
Topical drops
Procedure time
~5-10 min
Stay
Same day
Recovery
Same day
Follow-up
Vision check if needed