Introducing the new 1-Day Acuvue DEFINE Color-Enhancing Contacts Mar 23, 2015 We are pleased to announce the launch of 1-Day Acuvue DEFINE contact lenses. These new contact lenses enhance the natural beauty of your eyes with three unique effects for every eye color. Available in Shimmer, Sparkle and Shine. Select a model and see how DEFINE lenses enhance each eye color. Come in for a try on!