Definition: Corneal haze describes a cloudy or opaque appearance of the cornea. The cornea is normally clear, so corneal haze can greatly impair vision. Although the haze can occur in any part of the cornea, it is most often found within the thicker, middle layer of the cornea, called the stroma.
Corneal haze is most often caused by inflammatory cells and other debris that is activated during trauma, infection or surgery. Corneal haze sometimes occurs during laser vision correction procedures. Although it can occur in Lasik, it is more often associated with procedures such as PRK or Lasek.
Corneal haze is usually successfully treated in post-laser surgery patients with steroid eye drops.