Eye PCO, or Posterior Capsule Opacification, is a common complication after cataract surgery. It's often called a "secondary cataract," though it's different from the original cataract.
Understanding Posterior Capsule Opacification
After cataract surgery, the natural lens is removed and replaced with an artificial lens (IOL). The posterior capsule, a membrane that held the original lens, is left in place to support the IOL.
- The Problem: Over time, lens epithelial cells (LECs) can migrate to the posterior capsule.
- What Happens: These cells proliferate and differentiate, causing the capsule to become cloudy or opaque.
- The Result: This clouding, or opacification, impairs vision. According to the reference, posterior capsule opacification (PCO) is the most common postoperative complication of cataract extraction.
Why it Happens
PCO occurs because some lens epithelial cells remain after cataract surgery. These cells can then:
- Migrate: Move across the posterior capsule.
- Proliferate: Multiply and increase in number.
- Differentiate: Change into different cell types that contribute to opacification.
Addressing PCO
Fortunately, PCO is treatable with a quick and painless laser procedure called a YAG laser capsulotomy. This procedure creates a clear opening in the posterior capsule, restoring clear vision.
