Glasses - also called eyeglasses (formal), spectacles, or specs (informal) - are frames bearing lenses worn in front of the eyes, normally for vision correction or eye protection. Safety glasses are a kind of eye protection against flying debris or against visible and near visible light or radiation. Sunglasses allow better vision in bright daylight, and may protect against damage from high levels of ultraviolet light. Other types of glasses may be used for viewing visual information (such as stereoscopy) or simply just for aesthetic or fashion values.

Historical types of glasses include the pince-nez, monocle, lorgnette, and scissor or scissors-glasses.

Modern glasses are typically supported by pads on the bridge of the nose and by temple arms (sides) placed over the ears. CR-39 lenses are the most common plastic lenses due to their low weight, high scratch resistance, low dispersion, and low transparency to ultraviolet and infrared radiation. Polycarbonate and Trivex lenses are the lightest and most shatter-resistant, making them the best for impact protection.

An unpopular aspect of glasses is their inconvenience. Even through the creation of light frames such as those made of titanium, very flexible frames, and new lens materials and optical coatings, glasses can still cause problems during rigorous sports. Visibility can be significantly reduced by becoming greasy, trapping vapour when eating hot food, swimming, walking in rain or rapid temperature changes (such as walking into a warm building from cold temperatures outside). Scraping, fracturing, or breakage of the lenses require time-consuming and costly professional repair, though modern plastic lenses are almost indestructible and very scratch-resistant.

Noun

glasses

1. Plural form of glass.
2. (plural only; not used in singular form) spectacles, frames bearing two lenses worn in front of the eyes

Usage notes

• A sight-improving lens for a single eye is a monocle.
• Though confusion is unlikely, clarity as to quantity is improved by using the expressions "a pair of glasses" (or "a pair of eyeglasses") or "(however many) pairs of eyeglasses".

Glasses

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Quotes about glasses

• "The optimist looks at the world through rose-tinted spectacles." ~ English proverb

• "Men seldom make passes / At girls who wear glasses" ~ Dorothy Parker
• "When you're a kid that sees through plastic With a harness of elastic So the girls all think you're icky And the boys all think you're queer" ~ John Sebastian, "Four Eyes"
• "Rose-colored glasses are never made in bifocals. Nobody wants to read the small print in dreams." ~ Ann Landers

Look up glasses in Wiktionary, the free dictionary Category: Technology

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Hannas K. Corp. - Offering alarm and motion clocks, as well as sun glasses and silk bags. Hayes Specialties - Provides a range of ...

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DadTalk - A news source that looks at the world through dad-colored glasses. Daddy, Papa & Me - A journal about two dads, their ...

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B Robinson Optical, Inc. - Designer and manufacturer of sunglasses, optical frames and reading glasses. Also offers private label products