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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. 73 best discounts for ages 50+: Where to save money for ... - AOL

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    Target — $10 off eyewear and contact lenses and 50% off prescription eyewear for AARP members. Ages 60 and older. Kohl's — 15% discount every Wednesday on select brands. Ages 65 and older

  4. Prism cover test - Wikipedia

    en.wikipedia.org/wiki/Prism_Cover_Test

    The prism cover test ( PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]

  5. 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 ...

  6. Voting Accessibility for the Elderly and Handicapped Act

    en.wikipedia.org/wiki/Voting_Accessibility_for...

    e. The Voting Accessibility for the Elderly and Handicapped Act ( VAEHA) P.L. 98-435, 42 U.S.C. §§ 1973ee – 1973ee-6, is a United States law passed in 1984 that mandates easy access for handicapped and elderly person to voter registration and polling places during Federal elections. The law also mandates registration and voting aids, such ...

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