Nightwatch glasses eliminate dangerous glare and brighten up your vision allowing you to drive safely without eye strain. Developed using specially coated yellow lenses that specifically block glare causing wavelengths while increasing contrast and brightness. Instantly clearer, instantly brighter. Turn dull, fuzzy and strained into bright, clear and relaxed driving. NIGHTWATCH™ are stylishly designed to be worn like standard glasses or on top of your prescription frames - making them convenient for use at any time of the day.