enow.com Web Search

  1. Ads

    related to: adding prism to eyeglass lenses reviews complaints amazon canada sales tax

Search results

  1. Results from the WOW.Com Content Network
  2. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Prism lenses (here unusually thick) are used for pre-operative prism adaptation. Eye care professionals use prism correction as a component of some eyeglass prescriptions.A lens which includes some amount of prism correction will displace the viewed image horizontally, vertically, or a combination of both directions.

  3. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient. If an eye examination indicates that corrective lenses are appropriate, the prescriber generally ...

  4. Adjustable-focus eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

    Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...

  5. Progressive lens - Wikipedia

    en.wikipedia.org/wiki/Progressive_lens

    Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription at the top of the lens and reaches a ...

  6. Optical coating - Wikipedia

    en.wikipedia.org/wiki/Optical_coating

    Optical coating. An optical coating is one or more thin layers of material deposited on an optical component such as a lens, prism or mirror, which alters the way in which the optic reflects and transmits light. These coatings have become a key technology in the field of optics. One type of optical coating is an anti-reflective coating, which ...

  7. Goods and services tax (Canada) - Wikipedia

    en.wikipedia.org/.../Goods_and_services_tax_(Canada)

    The tax is a 5% tax imposed on the supply of goods and services that are purchased in Canada, except certain items that are either "exempt" or "zero-rated": For tax-free — i.e., "zero-rated" — sales, GST is charged by suppliers at a rate of 0% so effectively there is no GST collected. However, when a supplier makes a zero-rated supply, it ...

  8. Harmonized sales tax - Wikipedia

    en.wikipedia.org/wiki/Harmonized_Sales_Tax

    In 1996, three of the four Atlantic provinces—New Brunswick, Newfoundland and Labrador, and Nova Scotia—entered into an agreement with the Government of Canada to implement what was initially termed the "blended sales tax" (renamed to "harmonized sales tax") which would combine the 7% federal GST with the provincial sales taxes of those provinces; as part of this project, the PST portion ...

  9. Amazon's No. 1 bestselling eyeglass cleaning kit is on sale - AOL

    www.aol.com/lifestyle/koala-eyeglass-cleaner...

    So, how does an eyeglass cleaning kit from a small business earn over 34,000 five-star fans and No. 1 Bestseller status on Amazon? By being awesome, it seems. Shoppers say the Koala Eyeglass Lens ...

  1. Ads

    related to: adding prism to eyeglass lenses reviews complaints amazon canada sales tax