Ophthalmic Lens Subsurface Elements Myopia Control
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Solution Overview
Problem
Myopia, or nearsightedness, is a growing optical condition where close objects are seen clearly but distant objects appear blurry, primarily due to an eyeball that is too long or a cornea that is too curved. This condition is associated with excessive eye growth and increased risk of other optical maladies, and current treatments like LASIK may not be suitable for individuals with high myopia.
Innovation Solution
The development of ophthalmic lenses with an annular zone containing subsurface optical elements formed via laser-induced changes in refractive index. These elements modify the distribution of light to the peripheral retina, reducing the stimulus for eye growth and thereby inhibiting the progression of myopia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional laser refractive surgery (LASIK) is performed, then central vision is corrected, but it is not suitable for individuals with high myopia and does not address peripheral retinal stimulation
Solution Approach 1:
The lens is divided into distinct functional zones: a central zone for correcting central vision and an annular zone for modifying peripheral retinal light distribution. This segmentation allows independent optimization of each zone's function, enabling the lens to address both central vision correction and peripheral retinal stimulation control, which is particularly beneficial for high myopia patients
Solution Approach 2:
Different regions of the lens are赋予 different optical properties. The central zone provides standard refractive correction, while the annular zone contains subsurface optical elements specifically designed to modify light distribution to the peripheral retina. This local differentiation enables targeted treatment of myopia progression mechanisms
2Length of moving object
If the eyeball grows excessively, then myopia develops, but this increases the risk of other optical maladies
Solution Approach 1:
The ophthalmic lens applies preliminary optical correction to the light entering the eye, modifying the light distribution pattern before it reaches the peripheral retina. By reducing hyperopic defocus and asymmetric blur in the peripheral retina through the annular zone's subsurface optical elements, the lens prevents the excessive eye growth stimulus that would otherwise lead to myopia progression and associated complications
Solution Approach 2:
The lens design incorporates optical feedback mechanisms where the subsurface optical elements in the annular zone continuously modify light distribution based on the eye's existing refractive state. This creates a feedback loop that reduces the stimulus for eye growth, thereby preventing further myopia progression and reducing the risk of associated optical maladies
3Reliability
If subsurface optical elements are added to modify peripheral light distribution, then myopia progression is inhibited, but device complexity increases
Solution Approach 1:
The invention merges multiple functions into a single ophthalmic lens: central vision correction through the central zone and peripheral retinal light distribution modification through the annular zone with subsurface optical elements. This integration allows the lens to simultaneously address both functions without requiring multiple separate devices, thereby reducing overall system complexity while maintaining effective myopia progression inhibition
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 use of these ophthalmic lenses effectively reduces the progression of myopia by modifying light distribution to the peripheral retina, addressing the underlying cause of excessive eye growth and associated risks.
Implementation Method 1
subsurface optical elements formed via laser-induced changes in refractive index
Implementation Method 2
formed via laser-induced changes in refractive index
Data Source
AI summary
A ophthalmic lens for inhibiting progression of myopia includes a central zone and an annular zone. The annular zone includes subsurface optical elements formed via laser-induced changes in refractive index of a material forming the annular zone. The subsurface optical elements are configured to modify distribution of light to the peripheral retina of a user so as to inhibit progression of myopia.