Intraocular electro-optic lens with ciliary muscle controlled accommodation

Annu Int Conf IEEE Eng Med Biol Soc. 2013:2013:3190-3. doi: 10.1109/EMBC.2013.6610219.

Abstract

In this paper a concept is proposed of an intraocular lens implant with electro-optic accommodation of a variable-focus hybrid liquid-crystal-based lens. The dioptric strength of the lens is electronically controlled by a signal that is derived from the change of inductance of a sensing coil due to a marker implanted in the nearby contracting or decontracting ciliary muscle. Analytical, numerical and experimental results are reported on the dependency of the frequency of a Colpitts oscillator circuit on the location of a nearby conductive marker. A concept is also reported on the use as an electro-optic lens of a device based on a liquid crystal in planar alignment, which is held between a flat and a curved window coated with optically transparent and electrically conductive layers.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Accommodation, Ocular / physiology*
  • Ciliary Body / physiology*
  • Feedback, Sensory / physiology
  • Humans
  • Lenses, Intraocular*
  • Liquid Crystals
  • Muscle Contraction / physiology
  • Muscle, Smooth / physiology*
  • Optical Devices
  • Optics and Photonics*