Eyelid tension measuring instrument

Abstract

The invention discloses an eyelid tension measuring instrument which comprises an inflatable air bag, an air guide tube and a measuring instrument body, wherein the inflatable air bag is placed between an eyeball and an upper eyelid, the inflatable air bag and the upper eyelid generate interactive extrusion force after being inflated, and air is exhausted under the action of the extrusion force to generate airflow; and the measuring instrument body is composed of a main body shell, a tension measuring module and a display module, and the tension measuring module is arranged in the main body shell, is connected with the inflatable airbag through the air guide tube, is used for measuring the magnitude of airflow wind power generated when the inflatable airbag exhausts air, and converts the the magnitude of the airflow wind power into the electric signals to be transmitted to a display module arranged on the main body shell. According to the eyelid tension measuring instrument, the upper eyelid tension is converted into the airflow wind power through the inflatable air bag, the airflow wind power is further amplified into high-sensitivity spring tension through the tension measuring module, and therefore, quantitative and accurate measurement of the upper eyelid tension is achieved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an eyelid tension measuring instrument. Background technique [0002] In contact lens fitting, the tension of the upper eyelid greatly affects the fit of the lens. For a contact lens user, the tighter eyelid will pull the lens up or squeeze the lens down when blinking, while the looser eyelid will The lower eyelid will displace the lens downward, which will shift the centering of the contact lens and affect the patient's refractive correction. [0003] At present, in clinical practice, doctors generally use the eyelid turning method, and qualitatively divide the eyelid tension into three grades of large, medium and small based on experience: if the upper eyelid is difficult to turn or cannot be reversed, it means that the patient’s eyelid tension is high, and a smaller diameter eyelid must be used. Lenses; if the upper eyelid is easy to turn over, it means th...

AI Technical Summary

Problems solved by technology

However, there is a large error in the qualitative measurement of the upper eyelid tension of the patient based on the doctor's experience, resulting in poor fitting results or even failure.

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