The last thing a pilot wants is to be blinded by the sun and loose control of their aircraft. With proper management of light into the eye, a Pilot will have the ability to properly focus on each and every maneuver with precision. HD Spex has developed a proprietary Varia lens technology to modulate the proper amount of light into the eye in changing lighting conditions; The HD Spex Varia piloting lens which transitions from a bright 25% transmittance to a darkened 8% transmittance providing optimal reduction of light into the eye while maintaining perfect visual recognition while flying your aircraft through full sun. HD Spex high definition color enhancing lens technologies not only offer 100% UV protection from the suns harmful UV rays, they offer vivid registration of the paint schemes on your aircraft.