Posterior capsule opacification is a common clouding of the thin membrane that holds the lens implant after cataract surgery, sometimes called a “secondary cataract”.
Why posterior capsule opacification happens
During cataract surgery, the cloudy natural lens is removed but the delicate capsule that supports the new artificial lens is left in place. Over months or years, residual lens cells can thicken or wrinkle this capsule, making it hazy.
- Vision may gradually become blurred or misty again
- Glare, halos, and trouble with bright lights or night driving can return
- Reading and fine detail may feel harder despite having a clear implant
- Routine eye checks can confirm the diagnosis
How it is treated and what to expect
Posterior capsule opacification is usually treated with a quick YAG laser capsulotomy in the clinic, which creates a small opening in the cloudy membrane to let light pass through clearly again.
- The procedure is painless with numbing drops and takes only a few minutes
- Most people notice sharper, brighter vision within hours to days
- Serious complications are rare but you will receive clear safety advice
- Regular follow up ensures the eye remains healthy after treatment
