Since golf takes place outdoors, your glasses should protect you from 100% of ultraviolet radiation (UV) and the danger is growing since the depletion of the ozone layer exposing the world to harmful UV radiation.
UV has been proved to cause various eye problems, such as cataracts, sunburn to the eyelids, pterygium and skin cancer around the eyes. Macular degeneration is also one of the leading causes of vision loss, especially among the elderly population in hot countries.
Many golfers find that regular sunglasses are loose fitting and tend interfere with their swing. As the head turns slightly, the bottom of the frame deflects their view of the ball. Look for sunglasses that do not have a drop lens at the bottom (without frame) that might interfere with your line of sight Wrap-around frames can also help protect the eyes from wind or dust impair your vision. Dust can make your eyes sore. When standing over a putt, look for sunglasses that cause less distortion of the line when you tilt your head towards the target.
Since you start your golf swing looking down, improperly fitted sunglasses can slide off the nose. Choose frames that have arms and nose clips that can be adjusted to fit so that they do not slide. Several manufacturers have introduced special covers that fit more securely around the ears and temples.
Most golf sunglasses can be fitted with prescription lenses. However, those who wear a bifocals or progressives probably have noticed that they must put their head down for better focus.
This is because the bifocal often interferes with the field of view, since the ball on a tee falls into your intermediate or distance vision, not your near-vision that the bifocal or varifocal is designed for. This can create an uncomfortable head position. A golfer that needs both distance and near corrections should consider special golf lenses.
This, for example, would mean a bifocal fitted low on the lens so you can easily see the ball in distance range without creating an uncomfortable head position. At the same time you’ll have the bifocal there to read and record on a score card.