Treatment

YAG laser capsulotomy

Medical reviewer Mr Mohamed Mohyudin· Last recorded site review

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What it is

After cataract surgery the thin membrane (capsule) holding the new lens can gradually turn cloudy, called posterior capsule opacification. This is common and is not the cataract coming back. A YAG laser makes a small opening in this membrane to restore clear vision.

What happens on the day

The treatment is done in a clinic, not an operating theatre, while you sit at a machine.

  • Drops to widen the pupil and numb the eye
  • A lens rested gently on the eye to focus the laser
  • A few minutes of painless laser to open the cloudy membrane
  • No cuts, stitches or eye patch needed

Recovery

You may see extra floaters and have slightly blurred vision for a few hours, and bright light can be dazzling until the pupil-widening drops wear off. Most people notice clearer vision within a day or two and can usually return to normal activities quickly.

What to expect

The improvement is usually permanent, as the same membrane does not cloud again. It is a very safe procedure, with a small risk of raised eye pressure or, rarely, retinal problems, so you may have a check afterwards.

Conditions this can help

CataractsAge-related clouding of the lens that blurs and glares; surgery is the only cure when daily life is affected — sudden vision loss is not typical cataract.

Frequently asked questions

Is YAG capsulotomy the cataract coming back?

No. A cataract cannot return once removed. YAG capsulotomy treats clouding of the membrane behind the lens implant, which is a common, separate change after cataract surgery.

Does YAG laser capsulotomy hurt?

Numbing drops are used and most people find the treatment painless. You may notice flashes of light or pressure from the contact lens. Tell the clinician if you feel discomfort.

How quickly does vision improve after YAG capsulotomy?

Most people notice clearer vision within a day or two, once any temporary floaters and blur from the procedure settle.

Your next step

Take this to your appointment

Write down what has changed, when it started, your current medicines and the questions you want answered. Take these to your eye-care appointment.

Patient resourcesFind care where you live →

Sudden loss of sight, severe eye pain or a dark curtain across vision needs immediate assessment. Do not wait to complete a worksheet.

Sources for this information

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