LASIK (laser assisted in-situ keratomileusis ) is probably the most commonly performed laser eye surgery procedure and tends to be what people think of when considering laser surgery for vision correction. However not all patients may be ideal candidates for LASIK surgery due to variations in cornea thickness and curvature. Photo refractive keratectomy ,or PRK, may be the better option for vision correction in some patients who are not able to have LASIK.