Mirrored sunglasses

The mirror coating decreases the amount of light passing through the tinted lens by a further 10–60%, making it especially useful for conditions of sand, water, snow, and higher altitudes.

The two most popular styles for these are dual lenses set in metal frames (which are often confused with aviators), and wraparound (a single, smooth, semi-circular lens that covers both eyes and much of the same area of the face covered by protective goggles, combined with a minimal plastic frame and single piece of plastic serving as a nose pad).

More modern reflective coatings usually have several alternating layers of specific thickness, made of dielectric materials and sometimes metals.

The metal layer can be made from titanium, nickel or chromium, or from an alloy like nichrome or Inconel, and has thickness ranging from 0.5 to 9 nanometers.

Throughout history, progression of the sunglasses began to change to serve more as a fashion stable, than eye wear for sun protection.

Before then, sunglasses were being used for more extreme weather conditions, like for polar explorers or for people visiting equatorial colonies.

[5] Cyberpunk can be classified as a sub-genre of science fiction, normally a futuristic society that deals heavily with technology.

[8] One early cyberpunk short story anthology, edited by Bruce Sterling, is called Mirrorshades.