Frequency domain OCT based whole-eye imaging and parameter measuring method and system

Abstract

The invention discloses a frequency domain OCT based whole-eye imaging and parameter measuring method and system. The whole-eye imaging and parameter measuring system includes a ranging system and a target system; through the conversion of anterior segment-posterior segment measurement, a lens can move to change the distances to the front of the eyes; and the measuring system can measure the boundary distance of each segment in anterior segments and posterior segments, and includes the measurement calculating on ocular axial lengths and anterior and posterior mean cornea and the identificationcalculating on central corneal thicknesses, lens thicknesses, anterior chamber depths and total thicknesses of the anterior segments even on the thicknesses of retina and choroid. Compared with traditional instruments which can only perform imaging on the anterior segments or the posterior segments, the system can combine the imaging of the anterior segments and the posterior segments at a lowercost, so that the imaging and parameter measuring of whole eyes can be realized, and therefore, the measuring system and method have great advantages on the investigation of ophthalmic diseases and the location of eye diseases.

Description

technical field [0001] The present disclosure relates to the field of image imaging technology and the field of medical information, in particular to a method and system for whole-eye imaging and parameter measurement based on frequency-domain OCT. Background technique [0002] With the people's health needs becoming more and more comprehensive and detailed, coupled with the use of electronic products by all age groups, aging and other problems, eye health problems have become more and more prominent, and have become one of the diseases affecting the people of our country; and each Outstanding performance in all age groups. Among them, adolescents mainly manifest as myopia and strabismus, middle-aged and elderly people manifest as glaucoma and cataract, and there are also diabetic retinopathy and senile macular degeneration in diabetic patients. Eyes are known as the windows of the soul, and eye health is crucial to people's physical and mental health. [0003] Now there a...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problem of "a comprehensive parameter extraction and imaging of the whole eye is not performed for a single area of ​​the eye", the present disclosure provides a frequency-domain OCT-based whole-eye imaging and parameter measurement system, which includes a ranging system , a target system and a data processing unit, the ranging system includes a broadband light source, a fiber coupler, a reference arm, a sample arm, and a spectrometer, and the coherent light from the broadband light source enters the reference arm all the way after being split by the optical coupler, and another One path enters the sample arm, and the two returned light interferences are connected to the spectrometer, and finally the image is reconstructed through the data processing unit; the reference arm is an optical delay line reference arm; the sample arm includes a liquid lens, a confocal lens group, a two-dimensional Scanning system; after being split by the optical coupler, the beam entering the sample arm passes through the liquid lens group, confocal lens group, two-dimensional scanning system, dichroic mirror in turn, and then scans the sample;

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