Do all people develop floaters after Lasik/PRK surgery in one or both eyes?

"Floaters" are not caused by LASIK, PRK, or for that matter, IOL surgery for cataracts. Nevertheless, this can be a common complaint from patients. Why is that?

Two reasons: 1) Patients can see better now, after vision-correcting surgery, things that were already there but not as well-focused. And:
2) Most LASIK/PRK patients are myopic (near-sighted). This vision problem (refractive error) is caused by the eyeball growing "too big." The growth of the eyeball tends to pull the vitreous free from the retina later in life. When this vitreous condenses and separates from the retina, it tends to stay suspended loosely in (or near to) your line of sight.

J. Trevor Woodhams, M.D. - Chief of Surgery, Woodhams Eye Clinic