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Nike SPARQ" was the name used under a marketing relationship between Nike and SPARQ, under which Nike sold a line of cross training footwear, apparel and equipment in the USA. [ 2 ] SPARQ's headquarters was in Portland, Oregon , with a distribution center in Oconomowoc, Wisconsin, until its sale to Nike in 2009 (Nike kept the distribution ...
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An example of the Landolt C eye chart (also known as the Japanese eye chart.). Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision, while the ETDRS chart is designed for use at 4 meters. [16]
Using a phoropter to determine a prescription for eyeglasses. 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.
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The below table shows the proportional change in a flash device's guide number relative to both ISO 100 and ISO 200. Note that the extremely high guide numbers shown in the right-hand portion of the table have a limited real-world ability to extend flash distances.
The Jaeger chart is an eye chart used in testing near visual acuity. It is a card on which paragraphs of text are printed, with the text sizes increasing from 0.37 mm to 2.5 mm. [ 1 ] This card is to be held by a patient at a fixed distance from the eye dependent on the J size being read.
An example SDS, including guidance for handling a hazardous substance and information on its composition and properties. A safety data sheet (SDS), [1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational safety and health for the use of various substances and products.