I have not mentioned this in awhile, but a good pair of polarized sunglasses are a “must-have” if you spend a lot of time on the water chasing fish. They will help you catch more fish, and they are a great piece of safety equipment too. Here is a good video reminder:
Buy the brand Al recommends in that video; I am sure they are good stuff. I am partial to these myself, H3O sunglasses. I have even been known to wear them at night!