Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for detecting intraocular astigmatism and astigmatism axis

A detection method and technology of astigmatism axis, applied in refractometers, retinoscopes, complex mathematical operations, etc., can solve the problems of low accuracy, cumbersome process, high inspection cost, and achieve the effect of convenient operation, simple method and high accuracy

Pending Publication Date: 2020-06-16
连云港市妇幼保健院
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only are there many inspection items and high inspection costs, but also the process is cumbersome and the accuracy is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting intraocular astigmatism and astigmatism axis
  • Method for detecting intraocular astigmatism and astigmatism axis
  • Method for detecting intraocular astigmatism and astigmatism axis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be further described below in conjunction with specific embodiments. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0042] Below in conjunction with accompanying drawing and embodiment the patent of the present invention is further described.

[0043] Such as figure 1 As shown, the present invention provides a method for detecting intraocular astigmatism and astigmatism axis, comprising the following steps:

[0044] Step 1: Use retinoscopy or computer optometry to obtain the total eye diopter, convert the total eye diopter from the plane of the glasses to the cornea plane, and obtain the total astigmatism of the whole eye from the diopter of the cornea plane; the specific process is as follows:

[0045] 1.1 Cross transformation of the panocular diopter of the spectacle plane: the panocular diopter of the spectac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for detecting intraocular astigmatism and astigmatism axis, which comprises the following steps: 1, obtaining ocular diopter by using retinoscopy optometry or computeroptometry, converting the ocular diopter from a glasses plane to a cornea plane, and obtaining ocular total astigmatism according to the diopter of the cornea plane; 2, indirectly obtaining corneal anterior surface astigmatism by using a corneal curvature meter; and 3, detecting intraocular astigmatism by utilizing a vector relationship among total ocular astigmatism, intraocular astigmatism and corneal anterior surface astigmatism. According to the method, the intraocular astigmatism degree and the astigmatism axis can be accurately obtained no matter how the relation between intraocular total astigmatism and corneal anterior surface astigmatism is by adopting existing simple equipment and simple and convenient optometry means such as retinoscopy optometry or a computer optometry instrument and a corneal curvature meter. The method is simple, convenient to operate and high in accuracy.

Description

technical field [0001] The invention relates to a method for detecting intraocular astigmatism degree and astigmatism axis, and belongs to the technical field of ophthalmology. Background technique [0002] Astigmatism is a refractive error of the eye that is related to the curvature of the cornea. Due to the uneven thickness of the cornea or the uneven curvature of the cornea, the refractive index of each meridian of the cornea is inconsistent, so that the light passing through these meridians cannot be gathered at the same focus, and the light cannot be accurately focused on the retina to form a clear object image. , this condition is called astigmatism. In cataract surgery, whether the astigmatism degree of the human eye lens and the astigmatism axis assessment is accurate can directly determine the quality of postoperative vision; the intraocular astigmatism is high, and the effect of corneal laser surgery is often poor. Corneal laser surgery has low intraocular astigma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B3/103G06F17/10
CPCA61B3/1035G06F17/10
Inventor 林健
Owner 连云港市妇幼保健院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products