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Method and device for determining individually required addition (add) of vision assister

一种助视器、个体的技术，应用在应用、视网膜镜、测试眼睛的设备等方向，能够解决不准确等问题

Active Publication Date: 2010-09-29
CARL ZEISS VISION INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0053] This method only takes age into account, using the distance a use , relative regulation ΔA rel and adjust ΔA using use is therefore inaccurate
[0054] Therefore, all the above-mentioned methods of determining incremental Add according to said prior art exhibit inaccuracies since they are based on assumptions or estimates
Since all of the above methods are subjective methods, they inevitably carry the disadvantages of subjective measurement methods (i.e., in particular, testing the validity of the person's statement, testing the person's perception at the measurement location, etc.)

Method used

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  • Method and device for determining individually required addition (add) of vision assister
  • Method and device for determining individually required addition (add) of vision assister
  • Method and device for determining individually required addition (add) of vision assister

Examples

Experimental program
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Embodiment Construction

[0174] Example of Determining Increment

[0175] figure 1 A flow chart is shown from which the individual method steps of a variant of the method according to the invention for determining the increment Add of the visual aid required for an individual test person can be derived. figure 2 A corresponding device for performing the above method is shown. The above method and device will be described in detail below.

[0176] In a first step 100, an initial increment Add for a vision aid (for example, a spectacle lens) of a test human eye is determined. preliminary . As a method for determining the initial increment Add preliminary Methods. For example, a method may be used in which the tester selects the test glasses that he feels most comfortable from a plurality of test glasses. As an initial increment Add preliminary , you can also use the figure 2The refractive unit 10 determines the increment Add. The dioptric unit 10 may, for example, comprise an optotype chart ...

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PUM

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Abstract

The invention provides a method and a device for determining the individually required addition of a vision assister. The method comprises the following steps: a) determining a preliminary addition (Addpreliminary), b) individually determining the depth of field (T) of the eye, and, c) computing the addition (Add) according to the following equation: Add=Addpreliminary-[omega]T, wherein [omega] defines a real number which is more than 0 but less than or equal to 1. Compared with the prior art, the method of the invention can more exactly determine the individually required addition of a vision assister.

Description

technical field [0001] The present invention relates to a method for determining the increments required for an individual vision aid and to a device for determining the increments required for an individual vision aid. The invention further relates to a computer and a computer program and a corresponding computer program product adapted to carry out the method, said programs and products having a program code adapted to carry out the method. Background technique [0002] Below, a large number of terms to be referred to later are defined first. [0003] Visual acuity or visual acuity V is the ability of an organism to perceive patterns, contours, etc. in the external world using its visual organs. The dimensionless characteristic visual acuity V is defined as [0004] V=1' / (individual angular visual acuity)(1) [0005] where angular visual acuity is the ability to still perceive that two objects of observation are not connected (also known as the minimum "separation thres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/09A61B3/00A61B3/103
CPCA61B3/0025
Inventor B·莫尼克·贝克尔吉泽斯-米格尔·卡贝扎-吉伦蒂莫·克拉策
Owner CARL ZEISS VISION INT GMBH