Human eye aberration measuring device and method thereof

Abstract

The invention discloses a human eye aberration measurement device and the measurement method, which relates to the field of measurement technology; the method firstly uses an optical path which is composed of a Hartmann-Shack wavefront sensor to measure the human eye wavefront aberration, makes use of a Zernike polynomial equation to carry out wavefront reconstruction and obtains the human eye wavefront aberration which is measured objectively by calculation; at the same time, a visual target is used in the same optical path to measure the human eye subjective aberration, so as to obtain the human eye aberration of the subjective measurement based on the judgement of the displayed visual target of the people to be measured; finally, the different weight values are set according to the different ages and genders of the people to be measured, as well as the calculation results of the statistical analysis in the past, the human eye wavefront aberration of the objective measurement and the aberration of the subjective measurement are subject to weighted information fusion according to the set weight values, and the human eye wavefront aberration after the fusion is finally obtained. The method combines the advantages of different measurement methods on the basis of weighted information fusion, which can improve the measurement accuracy of human eye wavefront aberration.

Description

technical field [0001] The invention relates to optometry technology, in particular to a human eye wavefront aberration measurement device and its weighted information fusion method. Background technique [0002] Human eye aberration measurement has a history of decades, from the initial measurement of low-order aberrations (defocus, astigmatism) to the measurement of high-order aberrations, and there are various measurement methods. However, there is no fast and accurate detection method at present, and the human eye, as a biological tissue, has the ability to adjust itself, and the aberration of the human eye is also closely related to the human nervous system, so subjective and objective measurement have their own advantages and disadvantages. There is no effective method to quickly and accurately measure the wavefront aberration of the human eye. As people grow older, the physiological state of the human eye is also changing, and the aberrations of the human eye of diff...

AI Technical Summary

Problems solved by technology

"Its shortcomings are: 1. It can only measure the low-order aberrations of the human eye, and cannot reflect the high-order aberrations of the human eye; 2. Although psychophysical methods are added, the measurement speed is slow; 3. Only the subjective aberration of the human eye is measured, and the objective aberration of the human eye is not considered

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