Eyes my speciality

, I would have answered sooner but i have exams!
Laser surgery when its elective (meaning choice of the patient) is usually to correct their vision. It corrects for Myopia, Hypermetropia and some astigmatism.
Before you can have laser surgery you need to know wether or not you’re a candidate for it. This usually has to do with whether or not your cornea is thick enough. That’s where corneal topography comes into it, your cornea is mapped using a technique known as Pachymetry to look at your corneal thickness. The reason for this is because the laser reshapes your cornea and also surgeons need enough residual cornea in case re-treatment needs to occur.
There are 2 different lasers used:
LASIK and Intralase:
is one of the most popular and successful . LASIK is the most commonly used surgical procedure for correcting short-sightedness (myopia), long-sightedness (hypermetropia), and astigmatism.
With the IntraLase method, pulses of laser light create your corneal flap(instead of a blade), which is then lifted so that the next step of LASIK – the re-shaping of your cornea – can be performed.
LASEK and PRK :
generally used to treat the same conditions as for LASIK, but in corneas which are abnormally shaped, have a fragile surface or are considered too thin for safe LASIK.
In LASEK , cells are gently removed from the surface of the eye before the laser is applied, the Excimer Laser is applied directly onto the cornea after removal of surface eye cells. The cells are returned at the completion of the procedure
A contact lens is then placed over the eye to protect it over the course of several days and assist healing.
Photorefractive Keratectomy (PRK) is a similar procedure to LASEK, however, cells are not returned to the surface of the eye after the laser is applied.
The results of both LASIK and LASEK are generally the same, except with LASEK there is no cutting of the corneal flap however vision takes longer to return to optimal standards and patient may suffer some discomfort.