1.   Despite the plethora of discounters, laser vision correction is largely confined to the middle-class and well-to-do, market analysts say.

2.   Laser vision correction is a major growth industry, with the number of patients nearly doubling annually.

3.   Looks can be deceiving, however, even in shares of a company that sells vision correction.

4.   On average, half of the vision correction seen at six months after the surgery is gone after two years.

5.   Tens of millions of nearsighted Americans are potential customers, making laser vision correction one of the most lucrative new health care markets going.

6.   But the FDA cautioned that CK offers temporary vision correction, because vision can deteriorate for at least a year after surgery.

7.   The rapid growth of laser vision correction has given those thinking about the surgery lots of choices in where they have it done and how much they pay.