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Portable diurnal intraocular pressure recording system

  • US 5,179,953 A
  • Filed: 08/27/1991
  • Issued: 01/19/1993
  • Est. Priority Date: 08/27/1991
  • Status: Expired due to Fees
First Claim
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1. A device for continuously monitoring the intraocular pressure in an eye, comprising:

  • a scleral contact lens having a pressure transducer thereon for measuring intraocular pressure and sized to fit within the sclera of an eye and position said pressure transducer in fixed contact with said sclera to indent said sclera in the superior temporal quadrant of the eye in the superior cul-de-sac during movement of said eye, said pressure transducer including at least one semiconductor strain gauge crystal adapted to vary its electrical resistance in response to intraocular pressure and projection means for positive scleral indentation, said projection means being positioned to transmit a response to intraocular pressure to said crystal;

    battery powered memory means mounted in said lens in non-scleral contact for recording measurements of the resistance through said crystal; and

    output means for providing access to said measurements upon removal of said lens from the eye.

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