Portable tenonometer

Abstract

The invention relates to a contact type portable tenonometer. The portable tenonometer comprises a shell, a probe, a first light source, an image sensor, strain foils, a microprocessor, a power supply and a display memory, wherein the probe has a round left end face and is made of a transparent optical material; at least two elastic beams are fixedly arranged at the right end of the probe; each elastic beam is perpendicular to the axis of the probe; the outer end of each elastic beam is fixedly connected to the left end of the shell; strain foils are arranged on the elastic beams; the image sensor is positioned at the right end of the probe; the axis of the receiving window of the image sensor coincides with the axis of the probe; the diameter of the receiving window is equal to or smaller than the diameter of the left end face of the probe; the first light source is arranged at the periphery of the receiving window; and the strain foils, the image sensor and the display memory are connected with the microprocessor. By the portable tenonometer, a plurality of intraocular pressure values can be detected continuously and dynamically, so that measurement errors can be effectively prevented when the tenonometer sways or a measured person shakes.

Description

technical field [0001] The invention relates to an intraocular pressure measuring device, in particular to a contact type portable intraocular pressure measuring device. Background technique [0002] Intraocular pressure is the pressure per unit volume of the eyeball wall (aqueous humor, lens, vitreous body, blood) acting on the eyeball wall. Long-term elevated intraocular pressure will lead to optic nerve ischemia, lower tolerance at the same intraocular pressure level, and cause neurodegeneration. Irreversible visual field defect. Intraocular pressure is often closely related to various eye diseases. At present, glaucoma is the second irreversible blinding eye disease in the world. According to statistics, there are more than 67 million primary glaucoma patients in the world. At present, there are at least 5 million glaucoma patients in my country, of which 790,000 are blind . The prevalence of this eye disease increases with age. Glaucoma is characterized by pathologi...

AI Technical Summary

Problems solved by technology

However, this tonometer is a Goldman-type tonometer. When using this method to measure, it can only measure the intraocular pressure of a specific applanation area, that is, only measure the intraocular pressure value once. When the measurer is not skilled, it will cause When the measuring device shakes, or the person being measured shakes due to nervousness, it may cause errors in the measurement results

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