I want 100% UVA and UVB protection for my eyes to avoid cataracts. Polarizing lens is supposed to reduce glare but I have only seen this work on water surfaces and not glare from light reflected off of cars. Some LCD screens have wavy lines when viewed with polarized lenses and so I started buying "safety glasses" that provide excellent protection and I buy them in dark gray and in yellow tints. They are available as a bifocal with various levels of magnification which helps with older eyes to read the bike computer display.