Laser corrected eye surgery is currently accepted by FAA South African and Australian CAA providing visual acuity standards are met and vision has "stabilised". Reports are required in some instances from the Surgeon who performed the procedure.
The CAA's position appears to be that they will consider certification for class 2 and recertification for class 1, providing original refractive error was not in excess of -5 diopters. This figure reflects the limit beyond which post-operative haze and glare tends tends to be a problem for people who have undergone PRK. There is however an alternative procedure known as lasik which combines the (CAA accepted) laser techniques used in PRK with a 40 years established surgical procedure. Research (openly quoted by the FAA) suggests that people who have undergone Lasik are much (20 to 30 times) less likely to suffer from haze, glare and other complications than those treated using PRK.
The outcome of Lasik is however very dependent upon the skill of the surgeon. Despite it's obvious success, there are risks. However small these may seem, your eyes need to be open to the possibility that you might be one of the unlucky few to end up with a lower level of best corrected visual acuity.