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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]
Old cow: A rude term for an older woman, especially one who is overweight or obese and homely. Old fart: [7] A boring and old-fashioned silly person. Old maid: An older never married lady. ( see "spinster" below) Olderly: Newfoundland slang term for "elderly"; can be offensive or neutral depending on the context.
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.
Even so, women are resilient and outlive men by more than five years in the U.S. As people move into their 70s and 80s, women outnumber men by significant margins. If we’re concerned about the ...
Socializing and meeting new people can help your brain function. “Making new friends is positive, because it’s new information, so it’s a new kind of stimulation,” says Karlene Ball, Ph.D ...
IT Cosmetics Brow Power Eyebrow Pencil. $26. Stuffed with nourishing ingredients that promote hair growth, this pencil is specifically designed to match your exact hair shade for a full, natural ...
In sexual relationships, concepts of age disparity, including what defines an age disparity, have developed over time and vary among societies. Differences in age preferences for mates can stem from partner availability, gender roles, and evolutionary mating strategies, and age preferences in sexual partners may vary cross-culturally.
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 ...
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