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An emoticon with glasses. For more emoticons in Wikipedia, see en:Wikipedia:Emoticons. Date: 2007: Source: The Tango! Desktop Project: Author: The people from the Tango! project: Permission (Reusing this file)
Man with glasses. A woman with glasses. Glasses, also known as eyeglasses or spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.
The template for rimless eyeglasses date back to the 1820s, when an Austrian inventor named Johann Friedrich Voigtländer [] marketed a rimless monocle. [2] The design as it is known today arose in the 1880s [3] as a means to alleviate the combined weight of metal frames with heavy glass lenses.
Management can occur with eyeglasses, contact lenses, or refractive corneal surgeries. [2] Glasses are easiest while contact lenses can provide a wider field of vision. [2] Surgery works by changing the shape of the cornea. [5] Far-sightedness primarily affects young children, with rates of 8% at 6 years old and 1% at 15 years old. [9]
3D red cyan glasses are recommended to view this image correctly. Template documentation [ view ] [ edit ] [ history ] [ purge ] This template can be used in image captions to hint the reader about the anaglyphic nature of the image.
Browline glasses are constructed with the upper portion of the frame thicker than the lower, simulating eyebrows, or otherwise drawing attention to the wearer's natural brow line. The most common means of construction is for the upper portion of the frame (the "brows" or "caps") and temples to be made of plastic, with the remainder of the frame ...
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An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres (billionths of a metre). They are used with a monochromatic light to determine the flatness (surface accuracy) of other surfaces (whether optical, metallic, ceramic, or otherwise), by means of ...