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Abbe number. In optics and lens design, the Abbe number, also known as the V-number or constringence of a transparent material, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of V indicating low dispersion. It is named after Ernst Abbe (1840–1905), the German physicist ...
American Hospital Association v. Becerra, No. 20-1114, 596 U.S. ___ (2022) The Medicare Prescription Drug, Improvement, and Modernization Act, [ 1] also called the Medicare Modernization Act or MMA, is a federal law of the United States, enacted in 2003. [ 2] It produced the largest overhaul of Medicare in the public health program's 38-year ...
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.
Formulary (pharmacy) A formulary is a list of pharmaceutical drugs, often decided upon by a group of people, for various reasons such as insurance coverage or use at a medical facility. [ 1] Traditionally, a formulary contained a collection of formulas for the compounding and testing of medication (a resource closer to what would be referred to ...
Here’s what you need to know: Self-employed people are allowed to deduct their health insurance premiums on Schedule 1 of the 1040 form as an “above the line” deduction (which lowers their ...
Private insurance companies administer Medicare Advantage plans. These plans cover all medically necessary services covered by Original Medicare, with additional benefits like vision, hearing, and ...
Medicare will provide coverage when you need that second opinion. You’ll be covered as long as the second opinion is about a service that Medicare covers. You’ll pay 20% of the cost when you ...
An optical instrument is said to be diffraction-limited if it has reached this limit of resolution performance. Other factors may affect an optical system's performance, such as lens imperfections or aberrations, but these are caused by errors in the manufacture or calculation of a lens, whereas the diffraction limit is the maximum resolution ...