Soft Contact Lens Shrinkage Application Method
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Solution Overview
Problem
Soft contact lenses are difficult to apply due to their large size, especially for children and the elderly, and reducing their size leads to instability and impaired function.
Innovation Solution
A method involving a liquid for contact lenses that shrinks the soft contact lens by altering its moisture content and osmotic pressure, allowing it to be easily applied and then restored to its original size for proper function without the need for instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the soft contact lens size is reduced to facilitate application, then the ease of application is improved, but the lens stability and functional performance deteriorate
Solution Approach 1:
The contact lens transitions from a static large size to a dynamic size that changes during application. The lens is initially small (3mm diameter) to facilitate easy placement on the eye, then expands to its functional size (14mm diameter) after application to ensure stability and proper optical performance. This dynamic size transformation resolves the contradiction between ease of application and lens stability.
Solution Approach 2:
The invention changes the physical parameter of lens diameter from small to large through a transformation process. By using a size-transforming device, the lens diameter parameter is dynamically adjusted: reduced to 3mm for easy application, then expanded to 14mm for stable wearing. This parameter transformation allows both requirements to be satisfied at different stages.
2Ease of operation
If instruments are used to hold and apply the contact lens, then the ease of application is improved, but the device complexity and need for familiarization increase
Solution Approach 1:
The invention extracts the size transformation function from complex application instruments and integrates it directly into the contact lens itself. The lens contains or is associated with a size-transforming device that enables automatic or semi-automatic size change, eliminating the need for separate holding instruments and reducing application complexity.
Solution Approach 2:
The contact lens performs its own size transformation through an integrated size-transforming device, making the application process self-service. The lens automatically transforms from small to large size during application without requiring external instruments or complex user manipulation, simplifying the overall application process.
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
Facilitates easy application of large-sized soft contact lenses, enhancing stability and functionality, particularly for children and the elderly, while also improving production and distribution efficiency.
Implementation Method 1
a liquid for contact lenses, which is capable of shrinking the soft contact lens by altering a moisture content of the soft contact lens
Implementation Method 2
change in moisture content of the soft contact lens may be utilized to enable the soft contact lens to readily return to a conventional size after the application through permeation of the lacrimal fluid
Data Source
AI summary
An object of the invention is to provide an application method capable of facilitating the application of the soft contact lens without using any instrument, a liquid for contact lenses capable of being used for the application method, and a soft contact lens package. The present invention is a method for applying a soft contact lens, including a shrinkage step of shrinking a soft contact lens by contacting the soft contact lens with a liquid for contact lenses, the liquid for contact lenses being capable of shrinking the soft contact lens to a state of being more intensively shrunken than an equilibrium state thereof in a physiological saline; and an application step of applying the shrunken soft contact lens to the eye, in which after the application step, the size of the soft contact lens is restored.