In many ways, modern cataract surgery is more sophisticated than simply clearing the line of vision from a cloudy cataract lens. Technology borrowed from laser vision correction surgeons allows cataract surgeons to not only improve vision clarity but also enhance the quality of vision.
Traditional cataract lens implants may induce so-called ‘higher order aberrations’. Higher-order aberrations may cause visual symptoms including night-time driving glare, haloes, and reduced contrast sensitivity. Aspheric lens implants take into account an individual’s eye anatomy, particularly the shape of the front clear part of the eye, the cornea. Aspheric implants reduce higher-order aberrations and maximize the quality of vision. Many patients report that the reduced symptoms of glare and halos afforded by an aspheric lens provide vision similar to twenty years before surgery.