Intraocular pressure detecting device and method based on laser speckle pattern principle

Abstract

The invention discloses an intraocular pressure detecting device and method based on a laser speckle pattern principle. The device comprises a laser source module used for emitting a laser beam to aneye to be detected, an image sensing module used for capturing time-varying dynamic images of a speckle pattern formed by the laser beam reflected by the eye to be detected, and an image processing module used for processing the dynamic images to obtain a speckle pattern displacement amplitude and determining the intraocular pressure of a subject based on the speckle pattern displacement amplitude. According to the device, the speckle pattern formed by reflecting the laser beam from an eyeball is captured and analyzed, the intraocular pressure detection can be performed effectively, timely andaccurately according to the corresponding relationship between the displacement amplitude of the speckle pattern and the intraocular pressure value, physical contact with the subject is not needed, and the device can be widely used in the detection of intraocular pressure related diseases.

Description

technical field [0001] The invention relates to the technical field of intraocular pressure detection, in particular to a device and method for detecting intraocular pressure in a non-contact manner based on the principle of laser speckle patterns. Background technique [0002] Glaucoma (glaucoma) is a group of diseases characterized by optic disc atrophy and depression, visual field defect and vision loss, which will cause vision loss. Tolerance to pressure damage has also been implicated in the development and progression of glaucoma. According to global statistics, glaucoma is the second most visual disease after cataract, and the number of people suffering from glaucoma is about 11-67 million. In the United States, the disease affects approximately 2 million people, and in terms of age, glaucoma patients are mostly elderly. However, in the early stages of glaucoma, there is an opportunity to slow or stop the progression of the disease if treated with drugs, lasers or s...

AI Technical Summary

Problems solved by technology

However, due to the individual differences in the corneal curvature, corneal thickness and elastic coefficient of the tested subjects, there is a certain deviation between the actual measured values ​​of the two methods and the real situation.

At the same time, the equipment cost of these two methods is high, the operator needs a high level of operation, and the measurement will bring greater discomfort to the measured person, it is difficult to achieve multiple measurements per day

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