Not everyone can, or should, have laser eye surgery. Any reputable doctor or clinic will check your expectations and your medical situation very carefully before agreeing to surgery. And, of course, you will undergo a detailed eye examination.
It makes sense for you to ask questions, shop around, do your own searches on the Internet and perhaps, if you can, think about waiting for a while before deciding on which form of treatment, if any, you want. You might also wish to consider getting one eye done at a time to allow time to check for any after-effects before deciding to have both eyes treated.
The website http://www.surgicaleyes.com has a list of evidence-based contraindications to laser eye surgery. Some of the most common include:
* Uncontrolled diabetes
* Vascular disease, such as lupus or rheumatoid arthritis, and autoimmune diseases
* Inability to wear contact lenses, particularly rigid gas permeables (if you develop any complications of eye surgery, these lenses may be the only ones you can wear to correct your vision)
* Tendency to dry eyes (exacerbated after surgery).