I ride in the northeast where lighting and traffic conditions change rapidly. Wrap-around Rx lenses are indispensable in urban riding, providing seamless peripheral vision. I come back for new lenses each time my vision has changed over the years.
The photo-black lenses can be worn in the early morning before sunrise and darken enough for noon-time rides, or when riding in and out of shade on tree lined roads. They are also well designed to prevent fogging, even at stop lights on summer rides, when both the air and this cyclist are steamy.
The Rx team also went the extra mile, working with me to accommodate the 5 diopter difference between my right and left eyes.