Eye condition
Secondary cataract after cataract surgery
A secondary cataract is not a new cataract. After cataract surgery the posterior lens capsule can become cloudy months or years later. As a result vision seems blurred or glary again.
Schematic illustration for explanation – medical approval required.
Typical symptoms
- Blurred vision
- Glare and halos
- Reduced contrast
- Reading becomes harder
- Increased sensitivity to light
The symptoms often develop gradually – many people initially take them for a new spectacle prescription.
How we examine
A vision test and examination at the slit lamp. This lets us see directly whether the posterior capsule is clouded and whether the symptoms fit.
How we treat
YAG laser capsulotomy opens the clouded posterior capsule in the centre, so that light can again reach the retina unhindered. The artificial lens stays in the eye. The treatment is performed as an outpatient, is quick and usually painless.
To the matching treatment →When you should act quickly
More severe pain, a marked deterioration of vision, new flashes of light, strikingly many black dots or a shadow in the field of vision: please have this assessed by an ophthalmologist promptly.
More on eye emergencies →Editorial team: Augencentrum Mülheim · Last updated 07/2026