We choose sunglasses on several aspects, like color, shape, fashion factors. Nowadays, there are many styles of sunglasses. However, the two categories of lens are colored optical glass and plastic (resin) lens ,the colored optical glass is welcomed by the majority. Certain metal oxides; i.e. mixing in the optical glass or plastic lenses "transfected" into various colors, and thus play the attenuation of light absorbed. The colors are green, tea, gray, blue, yellow, amber and so on,the experts pointed out that, for most people, the best color of sunglasses are gray and green. Gray is more suitable for visual physiology of the eyes, which make the scene more fax, and most appropriate to be used for general outdoor activities.
The rest of the colors have their own characteristics, such as brown, is a warm color that can help you see farther, to see the outline of the scene, to get rid of the impact of the blue sky and water. The amber can make one see through the fog frost, high contrast, increase the depth of field vision, clearer scene.
All those may help you choose the best sunglasses for wearing suitable for boating or rowing .Please focus on the functions of your sunglasses that block sunlight, reduce the reflection of light on the water.