A kind of intraocular pressure sensor and intraocular pressure measuring device based on optical fiber fpi

Abstract

The invention discloses an intraocular pressure sensor based on an optical fiber FPI (fuel pressure indicator) and an intraocular pressure measuring device. The intraocular pressure sensor comprises acornea contact lens, a single mode fiber, a sensing FPI and a reference FPI, wherein the cornea contact lens is used for pressing a cornea; the single mode fiber is used for transmitting a detectionoptical signal; the sensing FPI and the reference FPI are used for detecting intraocular pressure feedback optical signals and used for achieving optical sensation sensitivity enhancement through a vernier effect. The intraocular pressure measuring device comprises a broad spectrum light source, an optical coupling, a first optical circulator, a second optical circulator, a first intraocular pressure sensor, a second intraocular pressure sensor and a demodulator; the broad spectrum light source is used for providing detection light; the optical coupling is used for dividing the detection lightinto two paths; the first optical circulator and the second optical circulator are used for connecting the first intraocular pressure sensor and the second intraocular pressure sensor with the optical coupling and the demodulator respectively; the intraocular pressure sensors are used for measuring intraocular pressure feedback optical signals; the demodulator is used for demodulating the intraocular pressure feedback optical signals. The intraocular pressure sensor is simple to operate in intraocular pressure measurement and capable of measuring intraocular pressure in real time.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more specifically relates to an intraocular pressure sensor and an intraocular pressure measuring device based on an optical fiber FPI (Fabry-Perot Interferometer). Background technique [0002] Glaucoma is the second largest irreversible blinding eye disease in the world. Human medical practice has shown that glaucoma is closely related to pathological high intraocular pressure. The higher the intraocular pressure, the greater the chance of suffering from glaucoma. Therefore, no matter in the diagnosis or treatment of glaucoma, it is more important to pay attention to the real-time fluctuation of intraocular pressure than to only observe the intraocular pressure value at a single time point. [0003] Indentation tonometer, applanation tonometer and non-contact tonometer (NCT) are the most widely used intraocular pressure measurement devices in clinical practice; Depress the central ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and improvement needs of the prior art, the present invention provides an optical fiber FPI-based intraocular pressure sensor and an intraocular pressure measurement device, aiming to solve the problem that the existing intraocular pressure measurement device is inconvenient to operate and unable to measure intraocular pressure in real time

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