Chamomile Extract in Multipurpose Contact Lens Solutions
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Solution Overview
Problem
Multipurpose contact lens solutions often cause adverse reactions such as eye irritation, discomfort, and reduced vision clarity due to their composition, which existing solutions have not adequately addressed.
Innovation Solution
Incorporating chamomile extract at a concentration of 0.010 to 0.050 mg/ml into multipurpose solutions to enhance comfort, disinfecting efficacy, and reduce adverse reactions, while maintaining the solution's effectiveness in cleaning and disinfecting contact lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multipurpose solutions contain conventional antimicrobial agents and surfactants, then cleaning and disinfecting efficacy is improved, but eye irritation and discomfort increase
Solution Approach 1:
Chamomile extract serves as a mediator substance that reduces the harmful effects of conventional multipurpose solution components on the eye. The extract acts as a protective intermediary layer between the cleaning/disinfecting agents and the ocular surface, allowing the maintenance of effective cleaning and disinfecting properties while significantly reducing eye irritation and discomfort through its anti-inflammatory and soothing characteristics.
Solution Approach 2:
The invention creates a composite multipurpose solution by combining conventional cleaning and disinfecting agents with chamomile extract. This composite formulation integrates the functional properties of antimicrobial agents and surfactants with the therapeutic properties of chamomile, achieving both effective lens care and reduced ocular irritation simultaneously.
2Reliability
If multipurpose solutions use strong cleaning agents, then removal of organic debris is improved, but lens structural characteristics are altered
Solution Approach 1:
The invention modifies the chemical composition parameters of the multipurpose solution by incorporating chamomile extract, which changes the overall interaction profile with the contact lens material. This parameter change allows for effective organic debris removal while the chamomile components protect the lens structural integrity by reducing harsh chemical interactions that would otherwise cause shrinkage or swelling.
3Object-affected harmful factors
If chamomile extract is added to multipurpose solutions, then eye comfort is improved, but manufacturing complexity increases
Solution Approach 1:
The chamomile extract is incorporated at specific localized concentrations (0.001% to 0.050% w/v) within the multipurpose solution formulation. This local quality approach allows the extract to be positioned where it provides maximum protective benefit to the ocular surface while maintaining simple overall manufacturing processes and avoiding excessive complexity in the manufacturing system.
Data Source
AI summary
The multipurpose solutions of the present invention are used for cleaning, disinfecting, storing and rinsing contact lenses, without causing any of the common adverse effects of similar solutions on the eyes. They comprise chamomile extract in their composition. Chamomile not only exerts a cleaning and disinfecting action, but, most importantly, it has a soothing effect and eliminates the feeling of dry eyes, irritation etc. It provides a prolonged feeling of comfort to the lens user, thus allowing for the trouble-free wearing of contact lenses throughout longer periods of time.