Sunglasses

Sunglasses are dark tinted eyeglasses. They are often worn to protect the eyes from sunlight or as a fashion accessory. Some of the most popular brands include:

Common frame styles include

Aviators - Frames with a double bar nose bridge and often teardrop shaped lenses.
Wayfarers - Thicker plastic frames with metal dots at the top corner of the glasses.
Wraparound glasses - Where the lenses are curved around the face, offering greater protection and a wider field of vision.
Clip-on sunglasses - Frames akin to Pince-nez made to clip onto the front of a pair of prescription eyeglasses.
Fit over glasses - Designed to be donned over prescription glasses.

Common lens tints include

Tint intensities. The darkness of a lens tint is usually categorized in percentage or a category of four system.

Category one tints are the lightest and mainly for fashion usage. Category one tints are usually 10 or 20% tinted.
Category two tints are great for photosensitivity caused by indoor florescent lighting and correspond with 30% to 50% darkness
Category three tints are standard sunglass level 60% to 80% tint.
Category four tints are for the brightest of sunny days. These tints are usually 75% to 90%.
Gradient lenses have a darker tint at the top and goes lighter further down the lenses.

Other words for sunglasses include:

Sunnies - most common in British and Australian English
dark glasses
Smoked spectacles - Used especially for the nearly opaque glasses of the blind
Solar shields - Sunglasses with overly large lenses
Cooling glasses - In Indian English
Glares - In Indian English
Shades
Stunna shades - Sunglasses with large lenses. Used in hip-hop circles
Glecks - A term for both eyeglasses and sunglasses in Scottish English
Sun cheaters - In American English

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