One of the many great things about LASIK is its low complication rate.  Still, nothing in medicine is perfect.  The most common risk is either over correction or under correction, and about 5% of patients may need an enhancing procedure a few months afterwards. 

Another consideration is that your vision may still continue to change, not only during the healing process, but also years later.  This change may or may not become significant enough for an additional procedure or return to spectacle correction.

LASIK is an irreversible procedure - once it's done, it's done.  If you'd like to consider a reversible procedure, the Visian ICL is an option.

Presbyopia, or difficulty with near vision in middle age, can present the patient with other options.  If already in middle age, your poor distance may be masking your poor near vision.  After LASIK, your distance vision will be great, but you then may need glasses for near vision.  For younger patients, LASIK will not prevent your needing reading glasses in middle age.  Still, there are options which your surgeon will discuss with you.

Glare, poor contrast sensitivity, scarring, haze, flap dislocations, and dry eye are other real yet rare complications that can occur after laser refractive surgery.  Adhering to post operative instructions will greatly reduce these poor outcomes.