Wearable corneal contact lens, active continuous intraocular pressure monitoring method and device

By designing a wearable corneal contact lens and utilizing a pressure sensor array in the structural and sensing layers, combined with the Imbert-Fick law, active, high-precision 24-hour continuous intraocular pressure monitoring was achieved, solving the problem of low accuracy in existing continuous monitoring technologies.

CN115644797BActive Publication Date: 2026-04-07TSINGHUA UNIVERSITY
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Patent Information

Application Number
CN202211351958.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-31
Publication Date
2026-04-07
Estimated Expiration
2042-10-31

AI Technical Summary

Technical Problem

In the existing technology, intraocular pressure measurement devices are difficult to achieve 24-hour continuous monitoring, and the accuracy of existing wearable corneal contact lens sensors is low due to passive measurement of corneal curvature.

Method used

A wearable corneal contact lens was designed, comprising a structural layer and a sensing layer. The structural layer is attached to the cornea and eyelid, and the sensing layer contains an array of pressure sensors. By measuring the force and pressure area on the cornea when blinking or closing the eyes, intraocular pressure is calculated using the Imbert-Fick law, thus achieving active continuous monitoring.

Benefits of technology

It achieves high-precision, proactive 24-hour continuous intraocular pressure monitoring without the need for corneal curvature calibration for each patient, resulting in high accuracy and without affecting daily life.

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Abstract

This invention provides a wearable contact lens, an active continuous intraocular pressure (IOP) monitoring method, and a device. The wearable contact lens includes: a structural layer, the working surface of which conforms to the wearer's cornea and eyelids, and compresses or releases the cornea with eyelid movement; a sensing layer, located on the side of the structural layer closest to the cornea, containing multiple pressure sensor arrays, which acquire current pressure data and current pressure area of ​​the cornea when the wearer's eyelids descend to a preset position; and a control system, which calculates and outputs the current IOP based on the current pressure data and current pressure area acquired by the sensing layer. This invention obtains the user's IOP by acquiring the force and flattened area of ​​the cornea, without requiring any external force, achieving active and continuous IOP monitoring. It is convenient, quick, and provides high accuracy.
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