Premium
Progressive addition and veriables focus lenses: A review
Author(s) -
Sullivan Colin M.,
Fowler Colin W.
Publication year - 1988
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.1475-1313.1988.tb01177.x
Subject(s) - spectacle , focus (optics) , lens (geology) , variable (mathematics) , optometry , optics , political science , medicine , mathematics , physics , law , mathematical analysis
This paper reviews recent developments in the field of progressive addition spectacle lenses and variable focus lens systems design. The study is a sequel to the previous analytical work of von Rohr (1916), Graham (1942), and Bennett (1970). A brief history of the work documented by the aforementioned authors is presented. Comparative assessment is undertaken of the most recent patents of progressive addition and variables focus spectacle lenses. A largely verbal description is employed because patent literature is often devoid of mathematical models.