They react to the incident light and intelligently automatically change their shade from clear to dark when you go outside and back to clear when you re-enter rooms or buildings. By optimizing the amount of light that hits your eyes, Transitions lenses also help to reduce glare, eye fatigue and strain – for effortless and relaxed vision in every situation. Transitions offer a choice of products tailored to your eyecare needs and are available in a wide range of stylish lens colors so you can express your own personal style. Empower yourself to take control of your light & enjoy always-on protection anytime, anywhere – indoors and out!