Non-contact portable tonometer

Abstract

The invention discloses a non-contact portable tonometer. A central processor unit, an image collecting unit and an air pressurization unit are all arranged in a suitcase, wherein the air pressurization unit comprises an air pulse generation module and a pressure recording and transmission module; the image collecting unit comprises a shooting module and a focusing module; the focusing module receives a control instruction of the central processor unit, and performs focusing action; the non-contact portable tonometer further comprises a network synchronization unit, and the network synchronization unit is used for conducting data packing, encryption and transmission on data output by the central processor unit; the pressure recording and transmission module sends current pressure data generated by the air pulse generation module in real time, and transmits the current pressure data generated by the air pulse generation module to the central processor unit; and the shooting module acquires image data in real time, and sends the image data to the central processor unit, and the central processor unit matches the pressure data with the image data and calculates the hardness of corneathrough a calculation module in the central processor unit. According to the non-contact portable tonometer, based on the portable characteristic and low cost, effects of biomechanics properties of eyes on an existing tonometer are reduced.

Description

technical field [0001] The invention relates to the technical field of ophthalmology, in particular to a non-contact portable tonometer. Background technique [0002] The most advanced instrument for measuring intraocular pressure and in vivo corneal biomechanical properties in ophthalmology is the Corvis ST from Oculus. It uses highly repeatable air pressure to indent the cornea in a non-contact manner, and records the deformation information of the cornea during indentation and restoration of the original state, and then calculates the biomechanical parameters of the cornea and intraocular pressure. Although the acceptance of this device is on the rise at present, its cost is high, the device is bulky and needs to be equipped with external devices such as special computers. In terms of function, there is still a certain gap between the intraocular pressure value provided by the device and the real intraocular pressure, and the measured biomechanical parameters of the corn...

AI Technical Summary

Problems solved by technology

[0003] At present, there are still problems such as poor accuracy and consistency in intraocular pressure measurement, which is related to the inability of measurement equipment and technology to effectively exclude the influence of individual differences in the biomechanical properties of the eyeball (especially the cornea)

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