A light-touch intraocular pressure horizontal or vertical measuring device and method

Abstract

The invention discloses a soft touch type horizontal or vertical intraocular pressure measuring device and method. The device comprises a small magnetic needle pressure measuring probe, a detection front-end device, a signal drive conditioning circuit, an intraocular pressure instrument moving posture sensing array, a DSP core processing unit, an LCD and a wireless printing module. The method comprises the following steps: detecting a posture of the intraocular pressure instrument in real time, acquiring triaxial acceleration, driving a small magnetic needle to softly touch the eyeball at a constant speed and to apply a certain pressure to the eyeball so as to allow the central cornea to deform by generating exciting current in an electrified solenoid drive coil, recording a current signal fed back in the small magnetic needle reciprocating process by virtue of an induction coil, and calculating the forced acceleration of the intraocular pressure according to the current signal fed back by the induction coil, the measurement time and the triaxial acceleration converted quantity; and calculating the actual measured intraocular pressure value by combining a linear regression equation according to the forced acceleration of the intraocular pressure and the central cornea thickness CCT. The method disclosed by the invention is an accurate horizontal or vertical intraocular pressure measuring method, and great convenience is provided for patients suffering from eye diseases and diagnosis and treatment physicians.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a DSP-based medical device and method, in particular to a light-touch intraocular pressure horizontal or vertical measurement device and method; it is mainly used for measuring the measured person in a sitting position or lying down. Accurate measurement of intraocular pressure, increasing the scope of application of the tonometer and reducing the pain of special patients, can print out the test results wirelessly, which is convenient for doctors to diagnose ophthalmic diseases based on the measured intraocular pressure value, Background technique [0002] The measurement of intraocular pressure is an important inspection item in ophthalmology. In clinical practice, long-term intraocular pressure detection is often required for patients with glaucoma or suspected glaucoma. It is one of the main parameters in the diagnosis and treatment of glaucoma, and it is also the clinica...

AI Technical Summary

Problems solved by technology

[0005] In the clinical treatment of ophthalmology, according to the different conditions of intraocular pressure measurement environment and patients, there are two types of measurement postures: sitting, standing and lying down. The current tonometer is only suitable for sitting and standing horizontal measurement due to technical limitations.

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