Pair of progressive ophthalmic lenses
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United States of America Patent
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Feb 13, 2018
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N/A
app pub date -
Feb 12, 2014
filing date -
Feb 20, 2013
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Abstract
A pair of progressive ophthalmic lenses (1, 2) meets special conditions for improving binocular vision of a wearer, while avoiding discomfort for peripheral vision. A first one of the conditions relates to height values of far vision fields, intermediate vision fields and/or proximate vision fields, for indicating that the fields are different enough in height between both lenses. A second one of the conditions sets a maximum value for the relative difference in mean refractive power gradient between both lenses.
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