Sun shades

Sun shades, also known as sunglasses or shades, are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized, or darkened. In addition to their primary function to protect the eyes from the sun, sun shades have become a popular fashion accessory and are available in a myriad of styles, shapes, and colors.

History

The history of sun shades can be traced back to ancient times. In prehistoric and historic time, Inuit peoples wore flattened walrus ivory "glasses", looking through narrow slits to block harmful reflected rays of the sun. It is said that the Roman emperor Nero watched gladiator fights through polished light emerald green gems held up to his eyes. The invention of sunglasses was somewhere between 1268 and 1289 in Italy.

Types

Sun shades can be classified into several types based on their function, lens types, and styles. Some of the most common types include:

• Polarized Sunglasses: These reduce glare from surfaces such as water, roads, and cars. This type is especially useful for sports and driving.
• UV Protection Sunglasses: These block out the harmful ultraviolet rays from the sun, protecting the eyes from damage.
• Photochromic Lenses: These lenses automatically adjust to the level of sunlight, darkening in bright conditions and clearing up in low light.
• Mirror Coated Lenses: These have a reflective coating on the surface of the lenses to reduce brightness and glare.

Materials

The materials used in the manufacturing of sun shades include plastics, such as acetate and Polycarbonate, and metals, such as stainless steel and titanium. Lenses can be made from plastic, glass, or polycarbonate, each offering different levels of protection, clarity, and durability.

Fashion and Cultural Impact

Sun shades have had a significant impact on fashion and culture. They have been associated with celebrities and film icons since the 1930s. Brands like Ray-Ban and Oakley have become synonymous with high-quality eyewear that combines style with function. Sun shades are not just a summer accessory but a year-round staple in wardrobes around the world.

Health Benefits

Wearing sun shades can provide several health benefits, including:

• Protection against UV rays, which can lead to cataracts and other eye diseases.
• Reduction of glare, which can cause discomfort and lead to accidents while driving or engaging in sports.
• Protection from dust and debris, especially in windy conditions.

Choosing the Right Sun Shades

When choosing sun shades, it is important to consider factors such as UV protection, lens quality, frame material, and fit. It is recommended to look for sunglasses that block out 99% to 100% of both UVA and UVB rays. The fit of the sunglasses is also crucial for comfort and effectiveness in protecting the eyes.

Conclusion

Sun shades are an essential accessory for eye protection against harmful UV rays and glare. With their evolution into a fashion statement, they now serve the dual purpose of functionality and style. Whether for health reasons or as a fashion accessory, choosing the right pair of sun shades is important for ensuring optimal protection and comfort.