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TWO SPECTACLE LENSES FOR APHAKIA
Author(s) -
Fowler C. W.
Publication year - 1984
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.1475-1313.1984.tb00380.x
Subject(s) - aphakia , lens (geology) , spectacle , optics , flange , materials science , optometry , physics , medicine , visual acuity , economics , market economy , composite material
Many different designs have been produced for aphakic power spectacle lenses. Two lenses are described which have a common design aim–to produce a lens of large uncut diameter but reasonable cosmetic appearance and weight. These lenses both utilize a continuous aspheric surface on the front surface, which enables them to have a stabilised central power zone and a near piano peripheral flange, but without the disadvantages of the traditional lenticular construction.