A instrument of laser speckle eyeground blood flow measurement

Abstract

The invention relates to a medical used measuring instrument, in particular to an instrument utilizing a laser speckle technology to perform the measurement to the blood flow of the eyeground, to be exact, the invention is a measuring instrument of the laser speckle method eyeground blood flow, which comprises a laser speckle collector, a data processor of which the input end is connected with the output end of the laser speckle collector and a terminal display of which the input end is connected with the output end of the data processor. The invention adopts face scanning, the mechanical and electronic control parts of a measuring mechanism and is simple compared with SLDF/HRF, therefore, the cost of the instrument is relatively lower, and the operation is relatively easier. In addition, the invention also fills up a vacancy in the aspect of the study of an eyeground blood flow imaging instrument in China, the invention is helpful for quickening the study of the disease caused by the change to the eyeground blood flow in China, simultaneously, a diagnosis can be performed to a relevant disease through the measurement to the blood flow. Through the study to the rule of an eyeground blood flow change, the invention is in favor of preventing the disease related with the blood flow such as glaucoma and diabetes mellitus.

Description

Technical field [0001] The invention relates to a medical measuring instrument, in particular to an instrument that uses laser speckle technology to measure the blood flow of the fundus, specifically a laser speckle blood flow measuring instrument for the fundus. Background technique [0002] In the current medical field, a certain technology is used to measure the blood flow of the retina, choroid or optic disc for pathological diagnosis and cause analysis, and then quantitatively or qualitatively analyze the blood microcirculation system of the optic disc, retina or choroid. Diagnosis of various diseases such as glaucoma, diabetes, anterior ischemic optic neuropathy, ocular vascular obstructive disease, ocular ischemic syndrome, acute retinal necrosis syndrome, etc. is of great significance. For example, glaucoma, many scholars believe that glaucoma is caused by the increase in intraocular pressure, but there are many glaucoma patients whose intraocular pressure does not increa...

AI Technical Summary

Problems solved by technology

However, the image resolution captured by the fundus camera is limited by factors such as light source and film; choroidal vascular imaging of FFA is also a problem; and the equipment is expensive, which limits its wide application in clinical practice.

[0009] 6. The measurement of pulsatile ocular blood flow is a method of measuring the overall ocular blood flow through continuous tonography, but its measured value is affected by heart rate, blood pressure, intraocular pressure, material properties of the optic disc sieve plate and other unknown factors, so it is difficult for clinical application. It is very difficult to judge the result of

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