Discrete portable measuring device for monitoring noninvasive intraocular pressure with a nano-structured sensing contact lens prototype

Ana Moya*, Anton Guimerà, Irene Sánchez, Vladimir Laukin, Raúl Martín, Fernando Ussa, Elena Laukhina, Concepció Rovira, Jaume Veciana, José Carlos Pastor, Rosa Villa, Jordi Aguiló

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A new portable measuring device for monitoring intraocular pressure with a non invasive system using a prototype of contact lens has been developed. The contact lens is based on a new organic flexible highly piezoresisitive film sensor that is glued to the central hole of a lens. The measuring system is wire connected to the contact lens and incorporates user interface methods and a Bluetooth link for bi-directional wireless data transfer. The key design aspects of such architecture are discussed in this paper. The system is designed with an architecture that can be integrated in the future in order to be placed in the contact lens. The discrete system is used to validate the electronic measurement operation and the contact lens sensor (CLS). The measurement instrument can calibrate the differences of the nominal value of the sensor and measure resistances variations that are related to pressure variations. The measuring system and the contact lens sensor were tested with an eye phantom and with enucleated pig eyes by applying pressure changes between 7 to 32 mmHg recording the electrical changes with the portable device.

Original languageEnglish
Pages (from-to)1-19
Number of pages19
JournalInternational Journal of E-Health and Medical Communications
Volume2
Issue number4
DOIs
Publication statusPublished - Oct 2011

Keywords

  • Contact lens
  • Glaucoma
  • Handheld device
  • Intraocular pressure
  • Pressure sensor

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