Asymmetric Myopia Control Lenses for Peripheral Retinal Defocus
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Solution Overview
Problem
Existing myopia treatments, such as glasses and contact lenses, are ineffective in preventing the onset and progression of myopia due to their reliance on empirical methods and lack of individual customization, particularly in peripheral retinal correction, leading to inconsistent results and potential side effects.
Innovation Solution
Customized ophthalmic lenses that incorporate a central optical zone with a conventional prescription and tailored peripheral optical properties based on an individual's age and conventional prescription, focusing far images in front of the nasal and temporal peripheral retinas to minimize hyperopic defocus and maximize myopic defocus, without requiring additional complex measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional glasses and contact lenses are used for myopia correction, then basic vision correction is achieved, but they fail to prevent myopia progression due to lack of peripheral retinal optimization
Solution Approach 1:
The lens applies different optical properties to different zones: the central zone provides standard refractive correction while the peripheral zones (temporal and nasal) are specifically optimized to focus far images in front of the peripheral retina, creating local quality variations that address myopia progression prevention
Solution Approach 2:
The lens is divided into distinct functional zones including a central optical zone and peripheral temporal/nasal zones, each with optimized optical properties tailored to specific functional requirements for different parts of the retina
2Ease of manufacture
If empirical methods are used for lens prescription, then manufacturing and fitting are simplified, but individual customization in peripheral retinal correction is lacking leading to inconsistent results
Solution Approach 1:
The patent utilizes measurable parameters (age, conventional prescription) to determine and optimize peripheral optical properties, transforming empirical prescribing into a parameter-driven customization process that maintains manufacturing feasibility while improving precision
3Duration of action of moving object
If existing myopia treatments are applied, then some slowing of progression may be achieved, but they are less suitable for preventing onset since treatment typically begins after minimal recommended age
Solution Approach 1:
The lens design incorporates peripheral optical optimization that can be applied from an early age, enabling preventive action before myopia onset or in early stages, rather than waiting for established myopia to begin treatment
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 lenses effectively slow down the progression of myopia by optimizing peripheral optical properties, providing precise vision correction and improving compliance through individualized customization, thus addressing the limitations of current treatments.
Implementation Method 1
focusing far images in front of the nasal and temporal peripheral retinas
Data Source
AI summary
The presently disclosed subject-matter relates to an ophthalmic lens for affecting the progression of myopia in an eye of an individual having a certain prescription (Rx). In one aspect, the presently disclosed subject-matter refers to a customization of the optical property profile based on the age and conventional prescription of an individual. According to another aspect of the presently disclosed subject-matter, a process in which the customization is performed inter alia by correlating between the conventional prescription and the peripheral optical property at the temporal and/or nasal retina is proposed. According to another aspect of the presently disclosed subject-matter an asymmetric myopia control lens with cylinder customization is provided.