Method for determining a colored filter applied to a spectacle lens and associated device

A color filter and filter technology, which is applied in glasses/safety glasses, glasses/goggles, optics, etc., can solve the problem of failure to demonstrate the substantial visual benefits of color filters and the difference in characteristics of color filters in target scale And other issues

Pending Publication Date: 2021-12-07
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, none of the known solutions takes into account said suboptimal visual conditions, especially optical scattering, during the evaluation of the benefits of color filters.
[0013] Also, most well-controlled laboratory studies evaluating several aspects of visual function have failed to demonstrate substantial visual benefits of color filters
This may be due to large differences in methods, target size, filters used and / or characteristics of participants

Method used

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  • Method for determining a colored filter applied to a spectacle lens and associated device
  • Method for determining a colored filter applied to a spectacle lens and associated device
  • Method for determining a colored filter applied to a spectacle lens and associated device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0149] Example 1: Identifying "(non-)responders" to color filters

[0150] Seeks to determine if an individual is a color filter responder.

[0151] An individual's contrast sensitivity is measured with full correction. Then, scatter was introduced and the contrast sensitivity was measured again. Finally, in addition to scatter, color filter(s) are introduced and the contrast sensitivity is again measured.

[0152] If the trial filter(s) allowed for improved contrast sensitivity, the individual can be listed as a responder and the trial filter selected. If a trial filter does not allow for improvement in contrast sensitivity, the individual can be classified as a non-responder and the trial filter not selected.

[0153] Here, an individual complains of poor vision while driving in fog. The method according to the invention is used to identify (non-)responders to color filters. First, contrast sensitivity was measured while the individual was wearing only their usual eye...

example 2

[0154] Example 2: Identifying the color filter that provides the greatest benefit to an individual

[0155] What is sought is to determine the color filter that provides the greatest benefit to the individual.

[0156] An individual's contrast sensitivity is measured with full correction. Then, scatter was introduced and the contrast sensitivity was measured again. Finally, in addition to scattering, several color filters are introduced one after the other. Contrast sensitivity was measured after the introduction of each new color filter. Choose the filter that provides the most benefit to the wearer.

[0157] Here, as in Example 1, the individual complains of poor vision while driving in fog. The method according to the invention is used in order to identify the color filter that provides the greatest benefit to the individual. The contrast sensitivity of the individual was measured while the individual was wearing their usual eyeglasses, and then again under scatterin...

example 3

[0158] Example 3: Demonstrating the benefits provided by color filters

[0159] It is sought to demonstrate the benefits provided by the filters.

[0160] Indeed, several vision tests do not allow subjective assessment of changes in their visual performance since thresholds, such as visible / invisible, are often sought. Using diffuse and colored filters, respectively, to present simulated loss and / or gain of vision while the wearer is wearing their full orthotic device may be beneficial to the wearer's confidence in the performance of the filters.

[0161] Individuals' contrast sensitivity was measured while wearing their usual eyeglasses. Then, scatter was introduced and the contrast sensitivity was measured again. In addition to scatter, color filter(s) are introduced and again the contrast sensitivity is measured. Finally, a simulation of vision loss and / or gain is displayed on the screen and presented to the individual based on the data collected regarding the contrast...

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PUM

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Abstract

The invention is directed to a method for determining at least one colored filter suitable for being applied to an ophthalmic lens in order to improve or maintain the visual comfort and / or the visual performance of an individual who wears said ophthalmic lens, said method comprising: a) selecting (100) at least one source of light scattering intended to be placed in front of an eye of the individual based on the degree of scattering needed; b) visually presenting (200) at least one image to the individual through said at least one source of light scattering; c) measuring (300) the individual's visual performance when said at least one image is visually presented through said at least one source of light scattering; d) providing (400) at least one colored filter intended to be placed in front of an eye of the wearer; e) visually presenting (500) the same at least one image of step b) to said individual through said at least one source of light scattering and said at least one colored filter; f1) measuring (600) the individual's visual performance when said at least one image is visually presented through said at least one source of scattering and said at least one colored filter; g) comparing (700) the individual's visual performance measured in step c) with the individual's visual performance measured in step f1); h) determining (800) if said colored filter is a suitable colored filter based on the result of the comparison of step g).

Description

technical field [0001] The present invention relates generally to the field of ophthalmic optics. [0002] More specifically, the present invention relates to the field of prescription of color filters for individuals wearing ophthalmic lenses with said filters. [0003] Even more particularly, the present invention relates to a method for determining at least one color filter suitable for application in an ophthalmic lens to improve or maintain the visual comfort and / or visual performance of the individual. Background technique [0004] Currently, color filters are used to improve or maintain the wearer's visual comfort in certain situations. More specifically, color filters allow improved contrast perception in suboptimal visual conditions (fog, rain, night, etc.). [0005] Solutions exist that allow the wearer to be prescribed one or more prescription ophthalmic lenses equipped with optical filters. [0006] For example, from patent application FR 1650383 in the name o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C13/00G02C7/10
CPCG02C13/003G02C7/10G02C7/02G02F1/0311G02F1/133526
Inventor D·斯皮格尔
Owner ESSILOR INT CIE GEN DOPTIQUE
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