Golf Club City

Peak Vision GR4 A sleek Grilamid frame that rides easy with excellent lens wrap and depth for great coverage. Interchangeable lenses available. Fits Med-Small to Large heads.  Distortion In addition to the challenges associated with single filter lens, most sunglass lenses today are injection-molded polycarbonate (plastic), a 40 year old manufacturing technology. This technology, while producing light weight and inexpensive lenses, also produces lenses with very poor optical clarity. The distortion created during injection molding is a visible and pervasive artifact of all current performance sunglass lenses and also interferes with the ability to visualize contours and estimate distances. The graphic to the right shows a pair of our competitor's sunglasses (bottom) and PeakVision�Sports Performance Eyewear through an optics viewer that displays optical distortion as a rainbow effect. To address the distortion in injection-molded polycarbonate lenses, PeakVision�Sports utilizes a new material called NXT� This new material provides clarity equivalent to optical glass at less than 40% of the weight, while offering scratch and shatter resistance far superior to traditional polycarbonate lenses. Additionally, NXT�offers 100% UV400 protection!  Dual Zone  PeakVision Sports incorporates two different technologies into a noticeably unique and differentiated lens by integrating multiple color management filters into a sport lens made from a revolutionary new optical polymer. PeakVision Sports developed the patented Dual-Zone filtration that utilizes different filters in two zones of a sunglass lens. In the upper zone, neutral-density gray filtration eliminates overhead glare from the sun and enhances distance perception. Through precise color and light management technology, PeakVision�Sport's upper gray zone gradually transitions into an amber lower zone which enhances a golfer's ability to read the topography of the green. For skiers, the upper gray zone transitions into a vermillion lower zone. .      Eye Strain  Our patented Dual-Zone lens addresses the number one challenge facing sunglass wearers – no single color filter can simultaneously address the extremes of light conditions always encountered with a bright sky and darker terrain. Our lens balances the light to reduce the workload on the iris (which manages the pupil). By reducing the range in which the iris must operate, the eye is less fatigued and more stable. The enhanced stability delivers better vision over the course of a day. Dr. Burton Worrell, a UC Berkeley Professor and the eye d