Shadowfocimetry: adapting the holographic principle to a manual focimeter for visualization/marking of permanent engravings in progressive addition lenses.
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DOI: 10.1364/ol.454962
Abstract: Focimeters, especially manual versions, are the most used ophthalmic devices for dioptric power measurement in optometric clinical care. In the particular case of progressive addition lenses (PALs), they are used to determine far/near vision correction… read more here.
Keywords: progressive addition; addition lenses; principle manual; holographic principle ... See more keywords