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The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your ...
At the top right corner is a monocular for assisting the alignment of the two heads. Free-space optical communication ( FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. "Free space" means air, outer space, vacuum, or something similar.
The Canada–United States Free Trade Agreement (CUSFTA), official name as the Free Trade Agreement between Canada and the United States of America (French: Accord de libre-échange entre le Canada et les États-Unis d'Amérique), was a bilateral trade agreement reached by negotiators for Canada and the United States on October 4, 1987, and signed by the leaders of both countries on January 2 ...
The Canada Revenue Agency ( CRA; French: Agence du revenu du Canada; ARC) is the revenue service of the Canadian federal government, and most provincial and territorial governments. The CRA collects taxes, administers tax law and policy, and delivers benefit programs and tax credits. [ 4] Legislation administered by the CRA includes the Income ...
A pair of contact lenses, positioned with the concave side facing upward. Putting contacts in and taking them out. One-day disposable contact lenses with blue handling tint in blister-pack packaging. Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used ...
Rigid gas permeable lens. A rigid gas-permeable lens, also known as an RGP lens, GP lens, or colloquially, a hard contact lens, is a rigid contact lens made of oxygen -permeable polymers. Initially developed in the late 1970s, and through the 1980s and 1990s, they were an improvement over prior 'hard' lenses that restricted oxygen transmission ...
This is a list of international airports in Canada.. As defined by Transport Canada, an international airport: . means any airport designated by the Contracting State, in whose territory it is situated, as an airport of entry and departure for international commercial air traffic, where the formalities incident to customs, immigration, public health, animal and plant quarantine and similar ...
Canada is a founding member of the World Trade Organization (WTO) since 1 January 1995, having been an original GATT member since 1 January 1948. The North American Free Trade Agreement (NAFTA), which is held with Canada by the United States and Mexico, came into force on 1 January 1994, creating the largest free trade region in the world by GDP.