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Method for acquiring large-view-field incident wavefront aberration of individual human eyes

An acquisition method and wavefront aberration technology, applied in the field of optometry, can solve the problems of repeatability and low accuracy

Active Publication Date: 2021-12-24
NANKAI UNIV +1
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Problems solved by technology

Because there are many practical difficulties in clinically measuring the incident wavefront aberration of the human eye, although some methods have been proposed, the main measurement is the wavefront aberration of the 0° field of view; in addition, these methods also have repeatability and accuracy. low sex problem

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  • Method for acquiring large-view-field incident wavefront aberration of individual human eyes
  • Method for acquiring large-view-field incident wavefront aberration of individual human eyes
  • Method for acquiring large-view-field incident wavefront aberration of individual human eyes

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Embodiment 1

[0041] refer to figure 1 As shown, the present invention proposes a method for obtaining the incident wavefront aberration of a large field of view of an individual human eye (this embodiment takes the data of one human eye as an example, and explains in detail the construction process of the large field of view incident human eye model ), including the following steps:

[0042] S1. According to the corneal topography data, the actual measured large field of view (including horizontal field of view, vertical field of view and field of view in other directions) human eye exit wavefront aberration data and Navarro human eye model parameters, construct a semi- Personalized exit eye model, specifically:

[0043] S1.1. Establish the corneal surface shape, the expression of which is: (the corneal surface shape can describe the corneal shape more accurately.)

[0044]

[0045] In the formula, x and y represent the coordinates of the cornea, z represents the height of the cornea,...

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Abstract

The invention discloses a method for acquiring a large-view-field incident wavefront aberration of individual human eyes. The method specifically comprises the following steps: S1, constructing a semi-personalized emergent eye model according to corneal topographic map data, human eye emergent wavefront aberration data and Navarro human eye model parameters; S2, optimizing a crystalline lens of the semi-personalized emergent eye model to obtain a large-view-field emergent personalized eye model; and S3, carrying out the inversion operation on the large-view-field emergent personalized eye model to obtain a large-view-field incident personalized eye model; and obtaining the large-view-field incident wavefront aberration of the human eyes based on the large-view-field incident personalized eye model. According to the method, the large-view-field incident wavefront aberration of the individual human eyes can be obtained only by means of existing clinical technical conditions, and the method has the characteristics of large in view field angle for analysis and easiness for popularization.

Description

technical field [0001] The invention relates to the field of ophthalmic optics, in particular to a method for acquiring incident wavefront aberrations of individual human eyes with a large field of view. Background technique [0002] At present, myopia has become a worldwide problem. The increase in the base of myopia and the early onset of myopia will lead to a high incidence of blinding diseases such as cataracts, glaucoma, and retinal detachment. Therefore, the effective prevention and control of myopia has attracted great attention from the scientific community and government departments. [0003] Optical methods are one of the effective means of myopia prevention and control. Myopic defocus around the retina can effectively control the development of myopia. Therefore, the research on retinal peripheral defocus is an important research content of optical methods to prevent and control myopia. Among them, the wavefront aberrometer is an effective means to study the ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/10
CPCA61B3/1015A61B3/0025
Inventor 刘永基李霄兰王雁张琳
Owner NANKAI UNIV
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