The benefits of wearing sunglasses when you play golf are numerous including protection from ultraviolet rays, less muscle tension because you don't have to squint and enhanced shielding from allergens. But if you are thinking of buying prescription sunglasses, here are a few key points. Golfers should not wear bifocals. Most bifocals correct for hyperopia (farsightedness) on the bottom half of the lenses. So at address, the ball appears blurry unless you drop your chin to look through the top half of the lenses. And dropping your chin can lead to a variety of swing flaws. Brown lenses provide good contrast against green backgrounds however, the best lenses for golfers typically come in lighter, amber tints that enhance the color green making it easier to read putts. Polarized glasses can distort a golfer's perspective on the greens big time in my own experience. The lenses should have an anti-reflective coasting to reduce the distraction of light reflecting off the back of the lenses. The sports styles that wrap slightly around the edges of your face are good but are sometimes too narrow for prescription lenses so make sure the frame style you choose can accommodate your corrective needs.