About this procedure
YAG capsulotomy is a laser treatment for clouding of the posterior capsule after cataract surgery. The phrase secondary cataract is commonly used, although the removed natural lens does not become cloudy again.
What you should know
The capsule that supports an implanted intraocular lens can lose transparency over time, causing haze or glare. A laser makes a small opening in the cloudy capsule. It does not involve another replacement of the artificial lens.
Symptoms and reasons for assessment
People may report blurred vision returning after an initially clear period, sensitivity to bright lights, reduced contrast or difficulty reading or driving. These symptoms alone do not prove that a YAG procedure is necessary.
Other possible explanations
Macular swelling, retinal disease, ocular surface dryness and other conditions can cause similar changes. Before laser treatment, the clinician needs to establish whether posterior capsule clouding adequately explains the symptoms.
How the condition is assessed
Assessment includes visual acuity, slit-lamp examination, the intraocular lens and the back of the eye. Macular OCT may be appropriate. Risk of eye-pressure rise and other complications is considered individually.
Treatment and follow-up options
YAG capsulotomy may improve the passage of light when the capsule is the true cause of reduced vision. It does not treat glaucoma, diabetic retinopathy or unrelated conditions. The ophthalmologist decides whether treatment and follow-up are needed.
When urgent care is needed
New flashes, many sudden floaters, a dark curtain across vision, severe pain or rapid loss of sight after the procedure require urgent ophthalmic review. Call 103 if there is an immediate threat to life.
Related health information
Signs and symptoms
Diagnosis and tests
Care and treatment approaches
When to seek urgent care
Frequently asked questions
Does YAG capsulotomy replace the implanted lens?
No. It opens the cloudy capsule behind an already implanted artificial lens.
Does everyone need YAG after cataract surgery?
No. It is considered only when clinically significant posterior capsule clouding is confirmed.
Can YAG capsulotomy treat glaucoma?
No. It addresses capsule clouding rather than glaucoma or other causes of impaired vision.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
