1.   Azar says there is more concern about LASIK in people with very severe myopia, because more corneal tissue has to be removed, potentially weakening the cornea.

2.   Beebe went through several months of recovery, which included drugs to prevent his immune system from rejecting the new corneal tissue.

3.   But knives and lasers can leave corneal tissue with ragged edges.

4.   He folds the flap back, then uses the excimer laser to reshape the corneal tissue beneath.

5.   One patient had to have an eye redone after a wrinkle formed on part of her corneal tissue.

6.   Corneal surface tissue could become the third type available, she said.

7.   Lack of corrective surgery scarred the soft corneal tissue, leading to severe vision loss and eventual blindness.