I'm not sure in your wife's particular case, but halos are a negative side effect of LASIK in some cases. It is not something that is always there the patient c

I'm not sure in your wife's particular case, but halos are a negative side effect of LASIK in some cases. It is not something that is always there the patient can now see. It has to do with the size of a patient's pupil versus the size of the area that can get corrected. Patients with very large pupils are told not to get the surgery period due to adverse halo effects.