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Technical note: Apparatus for comparison of progressive addition spectacle lenses
Author(s) -
Fowler C. W.
Publication year - 2006
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.2006.00399.x
Subject(s) - spectacle , lens (geology) , optics , power (physics) , computer science , optometry , physics , medicine , political science , law , quantum mechanics
Apparatus is described for the measurement of lens power distribution across the surface of a progressive addition spectacle lens. Although the method used is different to that specified in BS 2738‐7:1996, the measurements are nevertheless comparable, and are considered sufficiently accurate for making basic comparisons of lens type.