A small number of patients have reported fluctuating vision, night glare, and dry eyes during the first few weeks after LASIK. However, these side-effects are greatly reduced with our advanced screening and treatment technology, such as the Orbscan. For example, we measure the size of your pupils and the thickness of your cornea to prevent night vision problems. Zyoptix Customized LASIK also reduces the likelihood of glare and halos at night for those with larger pupils or more significant prescriptions.