Ophthalmology measuring device and method

Abstract

Disclosed is an ophthalmology measuring device and method. The ophthalmology measuring device comprises an adjusting component, an anterior segment optical path component, a posterior segment optical path component, a scanning component and a body module, wherein the adjusting component is arranged at one end close to human eyes and used for reflecting signal light scattered by the human eyes, the anterior segment optical path component and the posterior segment optical path component are arranged between the adjusting component and the scanning component and used for transmitting reflected signals of the adjusting component to the scanning component, the scanning component is arranged at the other end opposite to the adjusting component and used for transmitting the transmitted signal light to the body module, and the body module is used for interfering the signal light transmitted by the scanning component and acquiring corresponding interference light. The adjusting component and the scanning component can be controlled to synchronously rotate so as to be matched to transmit the signal light to the body module. The ophthalmology measuring device has the advantages of quickness in switching, convenience in operation, high imaging quality and the like.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an ophthalmology measuring device and method. Background technique [0002] The axial length of the eye is the root of judging the refractive errors of the human eye, distinguishing true myopia from pseudomyopia, and measuring the parameters of intraocular lenses after cataract surgery. [0003] The methods for measuring the axial length of the eye in the prior art include A-ultrasound measurement method and optical measurement method. The existing A-ultrasound measurement method adopts the principle of ultrasonic distance measurement, but requires the probe to directly contact the human eye, and the resolution of the ultrasound is relatively low. The measurement is not accurate enough, and the optical measurement method is based on the principle of dual-wavelength optical coherence to measure the axial length of the eye. Optical coherence tomography (OCT, Optical Coherence Tom...

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Problems solved by technology

[0003] The methods for measuring the axial length of the eye in the prior art include A-ultrasound measurement method and optical measurement method. The existing A-ultrasound measurement method adopts the principle of ultrasonic distance measurement, but requires the probe to directly contact the human eye, and the resolution of the ultrasound is relatively low. The measurement is not accurate enough, and the optical measurement method is based on the principle of dual-wavelength optical coherence to measure the axial length of the eye. Optical coherence tomography (OCT, Optical Coherence Tomography) is a new optical imaging technology. Patent document 200710020707.9 discloses a method using OCT measures the measuring method of ocular axial length, although this method can realize the measurement of the ocular axial length of human eye and various animal living bodies, but inventor finds that prior art has following shortcoming at least in the process of implementing the present invention: 1, Using the moving probe of the stepping motor to realize the adjustment of the optical path, so as to realize the imaging of the cornea and fundus

However, it takes a certain amount of time for the motor to move back and forth, and it is impossible to achieve fast switching and real-time imaging of the front and rear segments. In addition, the eyes of the measured object will shake, making the measurement of the axial length of the eye inaccurate, and the error is very large; 2. Due to the different structures of the cornea and fundus , using the same probe cannot focus at both positions, resulting in poor image quality

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