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Weight of edged spectacle lenses
Author(s) -
Obstfeld Henri
Publication year - 1991
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.1475-1313.1991.tb00540.x
Subject(s) - spectacle , lens (geology) , optics , optometry , eye lens , materials science , physics , medicine , economics , market economy
Uncut spectacle lenses of various powers and materials were edged lo three different eye shapes and three box eye sizes. Their weights were measured. This demonstrated that the eye shape has very little effect on the weight of edged lenses and that there is very little difference in weight for neighbouring eye sizes. The density of the lens material is of major importance, but other characteristics also influence the edged lens weight.