I found from a reliable source, WebMd that it does indeed never heal. Basically there is no scar to bind the flap to the rest of the cornea. It basically floats in place.
This is a link to a website that shows the strength of the flap is significantly weaker after surgery and never heals to as strong as a normal eye. The Conclusion was: "Conversely, the LASIK flap wound margin heals by producing a 10-fold stronger, peripheral hypercellular fibrotic stromal scar that averages 28.1% as strong as normal comeal stromal, but displays marked variability."
This is why an accident can cause a person, who even had lasik 10 years ago, to have a dislodged flap. Other people have had a flap disloged by finger pokes or airbags.
There are a lot of people who say the flap heals, but usually are saying that in order not to scare people with the technical truth. The flap does become more secure over time, but it doesn't hold the same integrity it used to.
· 10 years ago