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  2. Base curve radius - Wikipedia

    en.wikipedia.org/wiki/Base_curve_radius

    Base curve radius, or simply base curve, abbreviated BCR or BC, is the measure of an important parameter of a lens in optometry. On a spectacle lens, it is the flatter curvature of the front surface. On a contact lens it is the curvature of the back surface and is sometimes referred to as the back central optic radius (abbreviated BCOR ).

  3. Autorefractor - Wikipedia

    en.wikipedia.org/wiki/Autorefractor

    Here, lenses are switched in and out of a phoropter and the patient is asked "which looks better" while looking at a chart. This feedback refines the prescription to one which provides the patient with the best vision.

  4. Vertex distance - Wikipedia

    en.wikipedia.org/wiki/Vertex_distance

    Vertex distance. Vertex distance. Vertex distance is the distance between the back surface of a corrective lens, i.e. glasses (spectacles) or contact lenses, and the front of the cornea. Increasing or decreasing the vertex distance changes the optical properties of the system, by moving the focal point forward or backward, effectively changing ...

  5. CVS Health lays out changes to clarify prescription drug ...

    www.aol.com/news/cvs-health-lays-changes-clarify...

    It involves a formula based on the cost of the drug, a set markup and then a fee for filling the prescription. CVS Health runs one of the nation’s largest drugstore chains and a large pharmacy ...

  6. CVS prescription pricing change doesn't necessarily mean ...

    www.aol.com/cvs-prescription-pricing-change...

    CVS will soon change the way it prices drugs and it could impact how much your prescriptions cost. The company says it'll launch CVS CostVantage next year, its new drug pricing formula that will ...

  7. CVS will change the way it prices prescription drugs - AOL

    www.aol.com/cvs-change-way-prices-prescription...

    CVS Pharmacy is revamping the way it reimburses its pharmacies for prescription medications, which it says will bring more transparency and simplicity to its drug pricing system, the company ...

  8. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    Description ( notes ) AC. Anterior chamber. fluid-filled space between the iris and the endothelium. AC 4/4. Grade 4 anterior chamber angle. open angle between cornea and iris. AC 3/4. Grade 3 anterior chamber angle.

  9. List of abbreviations used in medical prescriptions - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_used...

    take (often effectively a noun meaning "prescription"—medical prescription or prescription drug) rep. repetatur: let it be repeated s. signa: write (write on the label) s.a. secundum artem: according to the art (accepted practice or best practice) SC subcutaneous "SC" can be mistaken for "SL," meaning sublingual. See also SQ: sem. semen seed

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