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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. 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.

4. Optical glass - Wikipedia

   en.wikipedia.org/wiki/Optical_glass

   Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...

5. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   Corrective lens. A pair of contact lenses, positioned with the concave side facing upward. 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.

6. Brooke Shields on Why Embracing Aging and Prioritizing ... - AOL

   www.aol.com/brooke-shields-why-embracing-aging...

   Why people over 50 are at higher risk for shingles While Shields has not had shingles , two of her close friends, who are over 50 years old, have. “It was debilitating for each of them in a ...

7. Christie Brinkley shares her beauty secrets for women over 50 ...

   www.aol.com/lifestyle/christie-brinkley-shares...

   Step 1: Skin prep. Tighten skin with a wave of a wand. (Photo: Amazon) (Photo: Amazon) Christie Brinkley perfects her beauty routine by starting with a wave of a wand — the Facial Instant ...