Pre-manufactured Anti-myopia Lenses for Peripheral Defocus Control
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Solution Overview
Problem
Current methods for inhibiting the progression of myopia, particularly in young people, are costly and not widely accessible, especially in developing countries, due to the need for specialized instruments and trained professionals to prescribe and manufacture custom anti-myopia lenses that manipulate peripheral refraction.
Innovation Solution
Pre-manufactured sets, kits, or stocks of contact and spectacle lenses with pre-determined corrective and peripheral powers, allowing for the selection of lenses that correct central refractive errors and provide myopic peripheral defocus to inhibit myopia progression without the need for measuring peripheral refraction, making them more accessible and affordable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If custom anti-myopia lenses are prescribed using specialized instruments and trained professionals, then myopia progression can be effectively inhibited, but the cost and accessibility become prohibitive
Solution Approach 1:
The patent employs pre-manufactured stock lenses with predetermined powers that can be directly fitted without custom manufacturing. These standard-powered lenses serve as affordable, accessible alternatives to expensive custom-made lenses, effectively resolving the contradiction between treatment effectiveness and accessibility by providing a reliable myopia control solution that does not require specialized equipment or extensive professional training for prescription
Solution Approach 2:
The patent utilizes the relationship between central and peripheral refraction parameters to create a standardized fitting protocol. By establishing predetermined peripheral defocus values corresponding to specific central powers, the system transforms a complex custom prescription process into a simplified parameter selection process, maintaining effectiveness while eliminating the need for specialized measuring instruments
2Reliability
If custom anti-myopia lenses are manufactured based on individual peripheral refraction measurements, then optimal myopia control is achieved, but manufacturing cost and time increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-manufacturing lenses with predetermined central and peripheral powers before clinical use. The stock lenses are prepared in advance with optimized power combinations that correspond to common myopia ranges, eliminating the need for time-consuming custom manufacturing and measurement processes while maintaining optimal myopia control effectiveness
Solution Approach 2:
The patent uses copying by creating multiple identical stock lenses with predetermined powers that can be directly fitted to patients. Instead of manufacturing unique custom lenses for each patient, the system uses replicated standard-powered lenses that have been pre-optimized for myopia control, dramatically increasing productivity and reducing costs while maintaining reliable treatment outcomes
3Ease of operation
If pre-manufactured lenses with predetermined powers are used, then accessibility and affordability improve, but customization for individual peripheral refraction needs is reduced
Solution Approach 1:
The patent applies universality by designing stock lenses with predetermined powers that can serve multiple patient types within common myopia ranges. The standardized lenses are designed to provide effective myopia control for a broad population without requiring individual customization, making the treatment accessible and affordable while maintaining sufficient adaptability for typical cases through the range of available stock powers
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a high statistical probability of effectively inhibiting myopia progression in a large majority of myopic patients with a high degree of tolerance for peripheral defocus, reducing the need for costly custom lens manufacturing and specialized training, thereby making anti-myopia treatment more accessible.
Implementation Method 1
lenses with negative central refractive power which enable natural accommodation of the lens to focus both near and distant objects on the fovea
Data Source
AI summary
Sets, kits or stocks of anti-myopia lenses and methods for their use, that do not require a clinician to measure peripheral refractive error in the eyes of myopic patients. Lenses having peripheral powers or defocus set in accordance with central corrective power will cover almost all normal myopes not worse than −6D central refractive error. For example, a kit or set of lenses (50, FIG. 15) can have multiple parts or sub-sets each with a compartmented container with lenses arranged according to increments of central corrective power. The lenses of the first part have four steps of peripheral power or defocus to provide therapeutic effect and, while the lenses of the second part also have four steps, the level of therapeutic effect is higher. Other examples of sets, kits and stocks, as well as examples of lenses themselves, are disclosed together with methods of use.