Open AccessElectronic liquid crystal contact lenses for the correction of presbyopia
Author(s) -
Harry E Milton,
Philip B. Morgan,
John Clamp,
Helen F. Gleeson
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.008035
Subject(s) - presbyopia , optics , lens (geology) , contact lens , materials science , optical power , optometry , physics , medicine , laser
Presbyopia, the age-related reduction in near vision acuity, is one of the leading issues facing the contact lens industry due to an increasingly ageing population and limitations associated with existing designs. A plastic-based liquid crystal contact lens is described which is designed to allow switchable vision correction. The device is characterized by low operating voltages (<5V(rms)) and has curvatures suitable for placement upon the cornea. Imaging and Point Spread Function analysis confirm that the lens provides an increase in optical power of + 2.00 ± 0.25 D when activated, ideal for presbyopia correction.