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  • Article
    Alvarez LW.
    J Am Optom Assoc. 1978 Jan;49(1):24-9.
    This paper traces the events that led to the development of the variable-focus lens, the variable-power astigmatic lens, and the principle of remote refraction and "phantom lenses." These developments formed the basis for invention of a new subjective refractor-the Vision Analyzer- whose novel design and rapid operation are described.
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