Intraocular pressure real-time measuring apparatus and method based on conjunctival sac pressure detection

Abstract

The invention relates to an intraocular pressure real-time measuring apparatus and method based on conjunctival sac pressure detection. The apparatus comprises a detection head disposed inside the conjunctival sac of a patient, and a signal receiver. The detection head comprises an air bag, and an air pressure sensor and a flexible circuit board both disposed inside the air bag. The air pressure in the air bag is the standard atmospheric pressure, the air bag is in contact with an eyeball, and the air bag is in a pressed state. The flexible circuit board is used for sensing the air pressure in the air bag, converting the air pressure into electric signals, and sending the electric signals. The signal receiver is used for receiving the signals sent by the flexible circuit board. According to the method, the air pressure sensor in the air bag senses the air pressure signals generated as the air bag is subjected to the intraocular pressure, the air pressure signals are converted into the electric signals, then the electric signals are sent out, and the signal receiver processes the signals after receiving the electric signals so as to obtain the real-time intraocular pressure value of the patient. The apparatus and the method are simple in structure, can automatically detect the intraocular pressure value of the patient in a real-time manner, facilitates a doctor in timely making a treatment scheme, and improves the treatment efficiency.

Description

technical field [0001] The invention relates to the measurement of intraocular pressure, in particular to a real-time intraocular pressure measurement device and method based on conjunctival sac pressure detection. Background technique [0002] Glaucoma is the second leading cause of blindness in the world, characterized by pathological elevated intraocular pressure, irreversible optic atrophy, and visual field defect. In my country, the incidence rate of glaucoma is 0.21%-1.64%, and the blinding rate is 10%-20%. It is the second irreversible blinding eye disease. [0003] Intraocular pressure is the pressure of eyeball contents (aqueous humor, lens, vitreous body, blood) acting on the eyeball wall per unit volume. The intraocular pressure has a 24-hour diurnal fluctuation. Long-term elevation of intraocular pressure and increased diurnal fluctuation will lead to optic nerve ischemia and neurodegeneration. The image signal converted by the retina cannot be smoothly transmit...

AI Technical Summary

Problems solved by technology

But the existing tonometer has following deficiencies: 1) the portability is low, and the patient needs to regularly go to the hospital to retest the intraocular pressure many times, and the measurement process consumes huge human and financial resources

2) The operation needs to be completed by a professional ophthalmologist, and the measurement process is cumbersome

3) Using anesthetics or instruments to touch the cornea may cause direct damage to the cornea

However, these measuring instruments can only measure intraocular pressure once, and cannot monitor long-term intraocular pressure fluctuations, so it is easy to miss some early glaucoma patients

However, the current method that can achieve long-term monitoring of intraocular pressure requires surgical implantation of sensors, which is a invasive operation, thus limiting its popularization and application

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