Glare, night driving problems, and light sensitivity can occur with both traditional and advanced technology lens implants. Night vision problems are usually much less severe than before cataract surgery. These phenomena are usually temporary and diminish as the brain and eyes adjust. Light sensitivity is usually temporary. The crystal-clear material of the advanced technology IOL nearly always permits more light to pass through than the natural lens it replaces, thus patients might have to adjust to seeing vivid colors and brighter lights than before surgery. All intraocular lenses can produce glare, light flares, or a halo effect at night since the pupil is open wider and allows light to reflect off the edge of the implant. Patients do note that there are more halos and glare with the multifocal IOL's than compared to standard IOL's. Your doctor can usually compensate for these problems through medication or night driving glasses.