In the cockpit of a plane, managing light is a critical aspect of being able to properly view both external visual cues as well as internal gauges while flying. The use of polarized lenses is obviously not a suitable solution for piloting, however, the principals of being able to attenuate light properly is a huge benefit to a pilot. Proper use of HD SPEX light management system of lens technologies can help reduce eye fatigue over long flights. Additionally, HD SPEX ColorTrast technology enhances the cockpit instrumentation with vivid enhancement of color and definition of both digital monitors as well as traditional gauges. HD SPEX Diamond Vision Lenses are coated with a special high performance flashing that helps reduce glare. Both Plano and Prescription.