Strike King’s APT (Advanced Polarization Technology) Lenses block 100% of harmful ultraviolet light, reduce eye strain, remove glare from the water, and enable the angler to see below the water’s surface. This helps you locate underwater habitat, see the action of your lure and even fish movements. APT lenses also offer improved sharpness and clarity, a more rigid composition, and a smooth state-of-the-art coating for greater resistance to scratches and better optical performance.