Bass Pro Shops Fish Eyes Polarized Sunglasses feature lightweight acrylic lenses with optically centered bifocal magnifiers to boost vision for all day comfort on the water. Advanced polarized lens coating filters out horizontally reflected glare and blocks 100% UVA/UVB, allowing you to see through the surface of the water. Fish Eyes Bifocals are available in +1.50 (weak), +2.00 (medium) and +2.50 (strong) magnifying strengths.