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2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

3. Prism (optics) - Wikipedia

   en.wikipedia.org/wiki/Prism_(optics)

   Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.

4. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.

5. Eyeglass prescription - Wikipedia

   en.wikipedia.org/wiki/Eyeglass_prescription

   Eyeglass prescription. 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.

6. Family of retired California deputy missing in Greece call ...

   www.aol.com/news/family-retired-california...

   July 2, 2024 at 3:08 PM. Municipality of Amorgos via Facebook. The family of a retired California sheriff’s deputy missing in Greece said the search for him has ended but they fear foul play is ...

7. Betsy Z. Cohen - Pay Pals - The Huffington Post

   data.huffingtonpost.com/paypals/betsy-z-cohen

   From January 2008 to December 2012, if you bought shares in companies when Betsy Z. Cohen joined the board, and sold them when she left, you would have a -19.9 percent return on your investment, compared to a -2.8 percent return from the S&P 500.