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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. 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

  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. Glasses - Wikipedia

    en.wikipedia.org/wiki/Glasses

    Reading glasses are available without prescription from drugstores, and offer a cheap, practical solution, though these have a pair of simple lenses of equal power, and so will not correct refraction problems like astigmatism or refractive or prismatic variations between the left and right eye. For the total correction of the individual's sight ...

  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. Website Agrees to Stop Selling Contact Lenses Without ... - AOL

    www.aol.com/news/2011-01-26-website-agrees-to...

    The owner of a website that sold cosmetic contact lenses to consumers without prescriptions reached a settlement with the Federal Trade Commission to stop the practice. Da Young Kim and her Duluth ...

  8. Optics and vision - Wikipedia

    en.wikipedia.org/wiki/Optics_and_vision

    Optics and vision. Vision of humans and other organisms depends on several organs such as the lens of the eye, and any vision correcting devices, which use optics to focus the image. The eyes of many animals contains a lens that focuses the light of its surroundings onto the retina of the eye. This lens is essential to producing clear images ...

  9. 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 ...

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