Accuracy inspection and calibration device and inspection and calibration method of non-contact tonometer

Abstract

The invention relates to a non-contact-type ophthalmotonometer accuracy inspection and calibration device. The device comprises an accuracy inspection and calibration module and an installation and location adjusting module; a pair of stand columns are arranged at the bottom of a metal rack (6), namely a transverse clamping column (14) and a longitudinal supporting column (15); the installation and location adjusting module comprises a horizontal support, the bottom of the horizontal support is provided with lifting adjusting knobs (10), and the upper portion of the horizontal support is provided with a horizontal bubble (9) used for adjusting levelness; the horizontal support is provided with a sliding block (8), a fixed block (12) and a height adjusting block (13); the sliding block (8) moves left and right along with a clamping adjusting knob (11) and is matched with the fixed block (12) to clamp the transverse clamping column (14), and the height of the height adjusting block (13) is adjusted by a height adjusting knob (16), so that the longitudinal supporting column (15) is supported by the height adjusting block (13).

Description

technical field [0001] The invention relates to a non-contact tonometer accuracy inspection and calibration device and an inspection and calibration method, belonging to the technical field of non-contact tonometer accuracy inspection and calibration. Background technique [0002] Intraocular pressure is the pressure inside the eyeball, and its main function is to maintain the normal shape and physiology of the eyeball. Intraocular pressure outside the normal range is likely to be a symptom of many eye diseases such as retinal detachment, eyeball rupture, endophthalmitis, or eyeball atrophy. Therefore, the measurement of intraocular pressure is of great significance to the clinical diagnosis of ophthalmic diseases, especially glaucoma. [0003] The tonometer is a special measuring instrument for quantitatively measuring intraocular pressure, and it has been included in the detailed catalog of working measuring instruments for compulsory verification by the People's Republic...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: the existing non-contact tonometer has a large difference between the simulated human eye and the actual situation of the human eye used in the accuracy measurement inspection, and does not consider the barrier of the human eye under the internal vitreous body. The actual volume of the cavity does not take into account the density and incompressibility of the actual aqueous humor medium of the human eye, resulting in low measurement accuracy; at the same time, it has not provided a pressure adjustment system for different intraocular pressure conditions; in addition, the existing The original non-contact tonometer inspection and calibration device is inconvenient to carry, inconvenient to install and position, and to adjust parameters, and cannot meet the needs of door-to-door service for expensive non-contact tonometers

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