Sunglasses are a type of eyewear designed to protect the eyes from the harmful effects of the sun’s ultraviolet (UV) radiation. Prolonged exposure to UV radiation can increase the risk of eye diseases such as cataracts, macular degeneration, and even skin cancer around the eyes.

When choosing sunglasses, it’s important to look for those that block 100% of both UVA and UVB rays. Polarized lenses can also be helpful for reducing glare and improving visual comfort in bright conditions. Some other features to consider when selecting sunglasses include:

1. Frame material: Sunglasses can be made from a variety of materials, including plastic, metal, and nylon. Choose a material that is comfortable and durable.
2. Lens color: Different lens colors can enhance contrast and improve visual clarity in different lighting conditions. Gray and brown lenses are good all-purpose colors, while yellow and orange lenses can be helpful for low-light conditions.
3. Fit: Sunglasses should fit comfortably on your face and not slip or slide when you move your head. Look for sunglasses with adjustable nose pads or temples for a custom fit.
4. Style: Sunglasses come in a variety of styles, from classic aviators to sporty wraparound frames. Choose a style that fits your personal taste and lifestyle.

It’s important to wear sunglasses whenever you’re outdoors, even on cloudy days, as UV rays can still penetrate through clouds. By choosing sunglasses with proper UV protection and wearing them consistently, you can help protect your eyes from the harmful effects of the sun’s rays and maintain good eye health.