Myopia Control Efficiency Evaluation Method

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Solution Overview

Problem

It is challenging for eye care professionals to effectively evaluate the long-term efficiency of myopia control products for individual wearers, given the varying responses of each individual to different products and the long-term nature of myopia progression.

Innovation Solution

A method involving placing the wearer in myopia-inducing conditions allows for rapid and quantifiable changes in myopia indicators, enabling eye care professionals to assess the efficiency of myopia control products within a short time frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If myopia control products are used for long term evaluation, then measurement precision is improved, but loss of time increases

Engineering Contradiction:
Improveevaluation accuracyVSAvoidevaluation time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-establishing myopia inducing conditions and using dual imaging to capture baseline and test images. This preparation allows the actual efficiency evaluation to be completed rapidly without requiring long-term observation periods, thus resolving the contradiction between measurement precision and time consumption.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the traditional mechanical/time-based long-term observation system with an optical measurement system using dual imaging and image processing. This substitution enables rapid quantification of myopia control efficiency through optical path differences, eliminating the need for prolonged evaluation periods while maintaining measurement accuracy.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If individualized myopia control product selection is implemented, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveproduct selection accuracyVSAvoidevaluation system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary computational processing system that automatically analyzes dual images, calculates optical path differences, and determines myopia control efficiency. This intermediary processing layer handles the complexity of individualized evaluation, making the system adaptable to different wearers without requiring complex manual assessment procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent uses image copying and comparison techniques, where a reference image is created under standard conditions and compared with test images taken under myopia inducing conditions. This copying approach simplifies individualized evaluation by using standardized reference frameworks that can be automatically processed, reducing system complexity while maintaining adaptability.

Inventive Principle:
Principle #26Copying

Data Source

PatentEP2962154B1Device for evaluating the efficiency of a myopia control product
Publication Date: 2025.01.22 ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)
  • EP2962154B1 patent drawingFigure 1~2
  • EP2962154B1 patent drawingFigure 3~4
  • EP2962154B1 patent drawing

AI summary

A method of evaluating the efficiency of a myopia control product for a wearer, the method comprising: - an initial myopia indicator providing step S1, during which the initial value of a myopia indicator of the wearer is provided, - a myopia condition step S2, during which the wearer using the myopia control product is placed in myopia inducing conditions, - a resulting myopia indicator determining step S3, during which the resulting value of the myopia indicator of the wearer is determined after the wearer has been placed in the myopia inducing conditions, - an efficiency evaluation step S4, during which the efficiency of the myopia control product is evaluated by comparing the initial value of the myopia indicator and the resulting value of the myopia indicator.