March 2012
Volume 53, Issue 14
Free
ARVO Annual Meeting Abstract  |   March 2012
Remote and Continuous Monitoring of Intraocular Pressure Using Novel Photonic Principle
Author Affiliations & Notes
  • Zeev Zalevsky
    Engineering, Bar-Ilan Univ, Ramat-Gan, Israel
    Graduate School in Advanced Optical Technologies, Friedrich-Alexander Universität, Erlangen-Nürnberg, Germany
  • Israel Margalit
    Engineering, Bar-Ilan Univ, Ramat-Gan, Israel
  • Yevgeny Beiderman
    Engineering, Bar-Ilan Univ, Ramat-Gan, Israel
  • Alon Skaat
    Goldshleger Eye Research Institute, Tel-Hashomer, Ramat-Gan, Israel
  • Michael Belkin
    Goldshleger Eye Research Institute, Tel-Hashomer, Ramat-Gan, Israel
  • Ralf-Peter Tornow
    Augenklini, Erlangen, Germany
  • Vicente Mico
    Departamento de Óptica, Universitat de València, Burjassot, Spain
  • Javier Garcia
    Departamento de Óptica, Universitat de València, Burjassot, Spain
  • Footnotes
    Commercial Relationships  Zeev Zalevsky, None; Israel Margalit, None; Yevgeny Beiderman, None; Alon Skaat, None; Michael Belkin, None; Ralf-Peter Tornow, None; Vicente Mico, None; Javier Garcia, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science March 2012, Vol.53, 1972. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Zeev Zalevsky, Israel Margalit, Yevgeny Beiderman, Alon Skaat, Michael Belkin, Ralf-Peter Tornow, Vicente Mico, Javier Garcia; Remote and Continuous Monitoring of Intraocular Pressure Using Novel Photonic Principle. Invest. Ophthalmol. Vis. Sci. 2012;53(14):1972.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose: : To present the initial experimental testing of a new measurement principle for continuous, remote non-contact and monitoring of intra-ocular pressure (IOP).

Methods: : A photonic device involving a fast camera and a laser was tested in rabbit’s eyes for continuous remote monitoring of the IOP. The device is based on tracking the secondary speckle patterns trajectories produced by reflection of an illuminating laser beam from the iris, cornea or sclera. IOP fluctuations change the speckle distributions reflected from the rabbit’s tissues that are acting as a transducer element of the sensing system. The distribution is continuously measured and analysed. The device is inexpensive since it requires only a laser, a camera and a computer.The anterior chambers of the eyes were canulated by an anterior chamber maintainer connected to a saline infusion bag. The IOP was varied by changing the elevation of the bag in respect to the position of the eye. The changes in the speckle pattern was continually monitored and analysed.

Results: : Data from the photonic device were correlated with the IOP fluctuations resulting from raising and lowering the infusion bag. The measurements show a good correlation and sensitivity of the proposed device with IOP changes while providing a high precision measurement (5% estimated error) for the best experimental configuration. The results obtained via the photonic approach were also compared with a reference IOP measurement obtained with Goldmann tonometer.

Conclusions: : The first experimental testing of a new photonic device has been performed with rabbits showing a promising new direction for remote and continuous monitoring of IOP. The system provides a high precision and non-invasive measurement method for IOP monitoring over prolonged periods.

Keywords: intraocular pressure 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×