Telescopic-Leg Glasses for Myopia Progression Control
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Solution Overview
Problem
Existing myopia correction methods are inconvenient, costly, and unsafe, failing to effectively retard myopia progression, and often cause eyestrain or other health issues due to repeated accommodation adjustments and inadequate peripheral defocus.
Innovation Solution
Glasses with telescopic legs that allow the lens position to adjust relative to the eye, altering the effective lens power through a telescopic mechanism, reducing the need for excessive focusing accommodation and elongation of the eyeball.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a patient wears myopia glasses to read, then distant vision is corrected, but the ciliary muscle spasm and extraocular intortor contraction cause tremendous pressure on eyeballs, leading to excessive elongation of the axis of eyeball and worsening myopia
Solution Approach 1:
The patent employs a telescopic leg mechanism that allows the distance between the lens and the eye to be dynamically adjusted. When reading, the leg can be extended to increase this distance, thereby reducing the accommodation demand on the ciliary muscle and the contraction pressure on the extraocular intortor, while still providing the necessary myopic correction for distant vision when the leg is retracted.
Solution Approach 2:
The patent changes the vertex distance parameter (distance between lens and cornea) to modify the effective power of the lens. By adjusting this parameter through the telescopic mechanism, the glasses can provide appropriate optical correction while minimizing the harmful effects of excessive accommodation and muscle contraction.
2Ease of operation
If a patient takes off glasses to read, then reading comfort is improved, but astigmatism correction is lost causing blurred image, and high degree myopia patients must bend forward causing back strain and discomfort
Solution Approach 1:
The patent makes a single pair of glasses universal for both distant and near vision tasks. The telescopic leg mechanism allows the same glasses to provide clear vision for both distance (when legs are retracted) and reading (when legs are extended), eliminating the need to switch between different pairs of glasses or remove them entirely for reading tasks.
3Adaptability or versatility
If myopia patients repeatedly wear and take off glasses for reading, then accommodation adjustment is possible, but the repeated practices are inconvenient and more likely to cause eyestrain
Solution Approach 1:
Instead of repeatedly putting on and taking off static glasses, the patent provides a dynamic adjustment mechanism within a single pair of glasses. The telescopic legs can be extended or retracted as needed, allowing continuous adaptation between distance and near vision without the inconvenience of removing and reapplying the glasses multiple times.
Data Source
AI summary
Glasses for retarding myopia progression is provided, and include a frame (10) and glasses legs. Each of the glasses legs includes a first leg (19) and a second leg (21). The second leg (21) is connected between the frame (10) and the first leg (19), the second leg (21) is movable telescopically in relation to the first leg (19). In movement of the frame (10) relative to eyeballs (100, 200) from a primary position to a secondary position stretched, a relationship between an effective degree and a lens degree is denoted by: P2=P1/(1−d2P1). P1 is an actual lens degree at the primary position, P2 is an effective lens degree at the secondary position, and d2 is a spacing between the primary position and the secondary position, the spacing meets: 0<d2<60 mm.