Contacts

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Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, and they can be worn to correct vision or for cosmetic or therapeutic reasons. In 2023, the worldwide market for contact lenses was estimated at $18.6 billion, with North America accounting for the largest share, over 38.18%. Multiple analysts estimated that the global market for contact lenses would reach $33.8 billion by 2030. As of 2010, the average age of contact lens wearers globally was 31 years old, and two-thirds of wearers were female. People choose to wear contact lenses for many reasons. Aesthetics and cosmetics are main motivating factors for people who want to avoid wearing glasses or to change the appearance or color of their eyes. Others wear contact lenses for functional or optical reasons. Contact lens use is generally more costly than wearing glasses, with annual expenses typically ranging from about US$200 to US$1,000 depending on lens type and replacement schedule. When compared with glasses, contact lenses typically provide better peripheral vision, and do not collect moisture (from rain, snow, condensation, etc.) or perspiration. This can make them preferable for sports and other outdoor activities. Contact lens wearers can also wear sunglasses, goggles, or other eye wear of their choice without having to fit them with prescription lenses or worry about compatibility with glasses. Additionally, there are conditions such as keratoconus and aniseikonia that are typically corrected better with contact lenses than with glasses.

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Article title : Contact lens
"Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over..."
Article title : Google Contacts
"sidebar of Gmail as part of Google Workspace. Google Contacts originated as the built-in contacts manager in Gmail, which was introduced in 2007. It was..."
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"deform when touching each other Contact process (mathematics), a model of an interacting particle system Electrical contacts Sparśa, a concept in Buddhism..."
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Article title : Windows Contacts
"run in Windows 7 and Windows 10 by searching for 'Contacts' (or 'wab.exe') in the Start Menu. Contacts can be stored in folders and groups. It can import..."
Article title : Point contacts
"Point contacts may refer to: Contact breaker, a type of electrical switch Point contact diode, a type of semiconductor diode Point of contact, a person..."
Article title : Portable Contacts
"to bridge proprietary contacts APIs such as Google's GData Contacts API, Yahoo's Address Book API, and Microsoft's Live Contacts API. It combines OAuth..."
Article title : Contact dermatitis
"Contact dermatitis is a type of acute or chronic inflammation of the skin caused by exposure to chemical or physical agents. Symptoms of contact dermatitis..."
Article title : Electrical contact
"then the pair does not pass a current. When the contacts touch, the switch is closed; when the contacts are separated, the switch is open. The gap must..."

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