Sunglasses protect your eyes from exposure to harmful ultraviolet radiation, minimize eye fatigue and eyestrain, and reduce the effects of harsh sunlight. The amount of UV protection is the most important factor in the selection of sunglasses. To provide adequate protection for your eyes, sunglasses should block out 99 to 100 percent of both UV-A and UV-B radiation.
In addition to UV protection, tint color is another important consideration. The sunglass tint color determines how much visible light reaches your eyes, how well you see other colors, and how well you see contrasts. Some tints actually enhance colors, while others distort them. Below is a guide to help you choose the right tint to optimize your performance.
Reduces the maximum amount of visible light and allows for true color recognition. The most popular tint. Good for bright sunny days and heavy glare situations.
Driving, outdoor sports (golf, running, cycling, boating), and general use.
Increases contrast and filter out some blue light. Reduces glare. Best in overcast, fog or low light conditions.
Heightens contrast and visual acuity by blocking out blue light. Improves contrast and depth perception especially against green and blue backgrounds such as the grass and sky.
Fishing, baseball, golf, hunting, cycling, and water sports.
Increases contrast by blocking blue light. Improves road visibility. Many people feel that rose tinted lenses are more comfortable for long periods of time. Soothing to the eyes. Reduces glare and eyestrain.
Driving, computer use.
Maintains true color balance and a good choice for varying light conditions. Provide the best contrast and visual acuity of any tint.