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
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Not only are there many inspection items and high inspection...

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  • Method for detecting intraocular astigmatism and astigmatism axis
  • Method for detecting intraocular astigmatism and astigmatism axis
  • Method for detecting intraocular astigmatism and astigmatism axis

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[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...

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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...

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Application Information

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IPC IPC(8): A61B3/103G06F17/10
CPCA61B3/1035G06F17/10
Inventor 林健
Owner 连云港市妇幼保健院
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