Clear lenses are best suited for swimming during winter and nighttime open water swimming. It offers no change in the color of surroundings while providing protection and clear vision.
Amber, yellow, and light blue lenses are for swimming in pools. Amber lenses, specifically, help people see the bottom of the pool through their ability to filter light. While these offer improved visibility, you must consider your vision, the lighting, and the amount of copper sulfate in water.
Red lenses enhance contrast. These are optimal for medium and low light conditions.
Dark blue lenses are preferable in open waters as it makes the most of underwater visibility. It is capable of reducing surface glare while offering great visibility.
Mirrored or dark lenses reduce brightness and glare in the open water swimming. Some competitive swimmers prefer these lenses for a perceived psychological advantage. These are not recommended for dimly lit pools.
Smoke lenses significantly lessen overall light without that much color distortion. These are great for swimming outside on sunny days!
Colored lenses are based on personal preference! Think of your style. You can go wild on this on this one!