Contact Lens - Contact Lenses
Contact Lens - Contact Lenses. What a great invention! No more cumbersome glasses that are always left somewhere where you don't remember.... No more fogging of the glasses when you enter from the cold into a warm room!
Contact lenses are a useful and very comfortable alternative to glasses for most people.
New Wikipedia
A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye. Leonardo da Vinci is credited with describing and sketching the first ideas for contact lenses in 1508, but it was more than 300 years later before contact lenses were actually fabricated and worn on the eye. Modern soft contact lenses were invented by the Czech chemist Otto Wichterle and his assistant Drahoslav Lím, who also invented the first gel used for their production.
Contact lenses usually serve the same corrective purpose as glasses, but are lightweight and virtually invisible—many commercial lenses are tinted a faint blue to make them more visible when immersed in cleaning and storage solutions. Some cosmetic lenses are deliberately colored to alter the appearance of the eye. Some lenses now have a thin surface treatment which is a UV coating; this helps to reduce UV damage to the eye's natural lens.
It has been estimated that 125 million people use contact lenses worldwide (2%),Barr, J. "2004 Annual Report". Contact Lens Spectrum. January, 2005. including 28 to 38 million in the United States and 13 million in Japan.National Consumer Affairs Center of Japan. NCAC News Vol. 12, No. 4. NCAC News. March, 2001. The types of lenses used and prescribed vary markedly between countries, with rigid lenses accounting for over 20% of currently-prescribed lenses in Japan, the Netherlands and Germany but less than 5% in Scandinavia.
People choose to wear contact lenses for many reasons, often due to their appearance and practicality.Sokol JL, Mier MG, Bloom S, Asbell PA. "A study of patient compliance in a contact lens-wearing population." CLAO J. 1990 Jul-Sep;16(3):209-13. PMID 2379308 When compared with spectacles, contact lenses are less affected by wet weather, do not steam up, and provide a wider field of vision. They are more suitable for a number of sporting activities. Additionally, ophthalmological conditions such as keratoconus and aniseikonia may not be accurately corrected with glasses.
Corrective Contacts - Contact Lenses to Correct The View
A contact lens corrects this mismatch and allows for proper focusing of the light onto the retina. Conditions correctable with contact lenses include nearsightedness or shortsightedness (myopia), farsightedness or longsightedness (hypermetropia), astigmatism and presbyopia.
Recently there has been renewed interest in orthokeratology, the correction of myopia by deliberate overnight flattening of the cornea, leaving the eye without contact lens or eyeglasses correction during the day.
To allow the eye to stay healthy and to 'breathe', contact lens wearers must usually take their contacts out every night or every few days, depending on the brand and style of the contact.
Contact Lens Brands
Advanced Medical Optics
Bausch & Lomb
CooperVision
daysoft
CIBAVision
Sauflon
Contact Lens Care
It's easy to avoid this problem if you follow the instructions that come with your contact lenses. Usually the cleaning takes place with a multipurpose solution - the most popular cleaning solution for contact lenses. Used for rinsing, disinfecting, cleaning and storing the lenses. Using this product eliminates the need for protein removal enzyme tablets in most cases.
Useful Contact Lens Sites
- Contact Lenses
- Up to date information on Contact Lenses: We update information and links daily to allow you to find the most current offers, news and tips about contact lenses.
- Coloured Contact Lenses
- Coloured Contact Lenses - Where to buy them, where to get free samples of color contacts, list of the best sites and on-line shops for contact lenses, updated daily
- Buy Contact Lenses Online - Check today's Special Deal
- Buying Contact Lenses online means to get the best deal. Be smart and check for todays special before buying just anywhere. Discounts and cheap contact lenses from reputable manufacturers.
- Contact Lenses Online - Checklist to avoid these problems
- Contact Lenses Online Buying Checklist what to look for. Up to date list of vendors with their current discount deals. Don't buy your contact lenses online before checking this information site.
- Contact Lenses at Discount Prices
- Contact Lenses at Discount Prices. Site is updated daily and allows you to research from one central place. We don't sell contact lenses, we help you find the best price.
by starsam
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