The author discusses designing ophthalmic lenses to meet the ANSI Z80.1 Standard for power minimization, suggesting implications for optometrists and laboratories.
The author discusses practical issues relating to optometrists ordering and laboratories supplying ophthalmic lenses that meet the ANSI Z80.1 Standard (1972) for minimizing unwanted spherical and cylindrical power in the periphery of lenses. He spells out the optical principles and formulas needed to develop a computer program than can be used by optometrists and opticians for designing lenses that meet the Z80.1 Standard.
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Glenn A. Fry (1977) studied this question.
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