Can someone not be eligible for eye surgery?

Yes: Although this is uncommon. Most people who wear glasses can have laser vision correction.

Eye Surgery: Depends on the eye surgery. If you are asking specifically about refractive surgery such as LASIK or PRK, not everyone is a candidate for these procedures. A comprehensive eye examination is recommended before any decision can be made about undergoing these types of procedures. Patients with dry eyes, extreme refractive errors, abnormal cornea anatomy to name a few would not be good candidates.