Intraocular pressure recording system

Details Intraocular pressure recording system Intraocular pressure recording system

A - Human Necessities

61

B

A61B 3/16 (2006.01)

Patent

CA 2452021

A new noninvasive approach for intraocular pressure (IOP) measurement allowing continuous monitoring over prolonged periods, regardless of patient's position and activities. The key element of this measurement method is a soft contact lens (1) including at least one strain gage (2) longitudinally arranged around the center of the contact lens and capable of measuring precisely spherical deformations of the eyeball induced by changes in IOP. This information is transmitted with wires or (preferably) wirelessly in real time to an external recording system (14). The system is placed in the same way as a normal corrective contact lens, no anesthesia is required and patient vision remains almost completely unimpaired.

La présente invention concerne une nouvelle approche non invasive de mesure de la pression intraoculaire (IOP) qui permet une surveillance continue sur des périodes prolongées, indépendamment de la position et des activités du patient. L'élément clé de ce nouveau procédé de mesure est une lentille de contact souple (1) comprenant au moins une jauge dynamométrique (2) agencée longitudinalement autour du centre de la lentille de contact et capable de mesurer précisément les déformations sphériques de l'oeil induites par les modifications de l'IOP. Ces informations sont transmises en temps réel par des fils ou, de préférence, sans fil à un système d'enregistrement externe (14). Le système de l'invention se place de la même manière qu'une lentille de contact correctrice normale, il ne nécessite pas d'anesthésie et il ne gène pratiquement pas la vision du patient.

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