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  2. List of optometric abbreviations - Wikipedia

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

    Visual acuity with Near chart without correctors Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions: VA OS Left visual acuity VA OD Right visual acuity VDU Visual display unit VF Visual field

  3. List of instruments used in ophthalmology - Wikipedia

    en.wikipedia.org/wiki/List_of_instruments_used...

    Near vision-do-; to determine visual acuity of near vision ••Jager's chart-do- ••Printer's types of N series-do- ••Snellen's near chart (1/17th reduction of distant chart)-do-; standard chart of alphabets; video link •Colour vision: to test colour vision ••Ishihara's chart: to determine the type of colour blindness ...

  4. Medical billing - Wikipedia

    en.wikipedia.org/wiki/Medical_billing

    Before the spread of health insurance, doctors charged patients according to what they thought each patient could afford. This practice was known as sliding fees and became a legal rule in the 20th century in the U.S. [ 7 ] [ 10 ] Eventually, changing economic conditions and the introduction of health insurance in the mid-20th century ushered ...

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  6. Template:Eye symptoms and signs - Wikipedia

    en.wikipedia.org/.../Template:Eye_symptoms_and_signs

    To change this template's initial visibility, the |state= parameter may be used: {{Eye symptoms and signs | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{Eye symptoms and signs | state = expanded}} will show the template expanded, i.e. fully visible.

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