Carbachol Ophthalmic Formulation for Temporary Presbyopia Relief
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Solution Overview
Problem
There is a need for non-invasive, non-surgical methods to temporarily alleviate presbyopia without the use of corrective lenses, as existing treatments such as reading glasses, bi-focal eyeglasses, contact lenses, intra-ocular lenses, and laser ablation are either invasive or require continuous use.
Innovation Solution
Development of ophthalmic formulations containing carbachol, with specific concentrations and pH levels, to stimulate the ciliary muscle and enhance accommodation, thereby improving near vision temporarily.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical procedures or laser ablation are used to treat presbyopia, then long-term correction is achieved, but the treatment becomes invasive and carries surgical risks
Solution Approach 1:
The patent replaces surgical mechanical intervention with a chemical/pharmacological approach. Carbachol eye drops are used to temporarily constrict the pupil and stimulate the ciliary muscle, achieving presbyopia correction without surgical invasion. This substitutes the mechanical/surgical system with a chemical action system that acts on the eye's natural accommodation mechanisms.
2Reliability
If corrective lenses (reading glasses, bi-focals, contact lenses) are used to treat presbyopia, then vision correction is achieved, but continuous wear is required and peripheral vision is limited
Solution Approach 1:
The patent employs a temporary, short-duration treatment approach using carbachol eye drops that last only a few hours. This replaces the need for permanent or continuous corrective lenses with a transient pharmacological intervention. The effect is intentional and temporary, allowing the patient to be lens-free for extended periods while maintaining the ability to correct presbyopia when needed.
3Reliability
If high concentration carbachol formulations are used to improve accommodation, then near vision improvement is enhanced, but ciliary muscle spasm and distance vision blur increase
Solution Approach 1:
The patent optimizes the concentration parameter of carbachol to achieve the desired therapeutic effect while minimizing side effects. By carefully selecting the appropriate concentration range and formulation parameters, the patent balances near vision improvement with acceptable levels of ciliary muscle spasm and distance vision blur, making the treatment more tolerable for patients.
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 formulations effectively improve near visual acuity and reduce presbyopia symptoms by stimulating the ciliary muscle, providing a temporary solution without the need for surgical intervention or continuous lens use.
Implementation Method 1
ophthalmic formulations containing carbachol, with specific concentrations and pH levels, to stimulate the ciliary muscle and enhance accommodation
Data Source
AI summary
The present disclosure is directed to ophthalmic formulations comprising carbachol, processes for preparing ophthalmic formulations comprising carbachol, and methods of treating presbyopia and other ophthalmic conditions by administering ophthalmic formulations comprising carbachol to a subject in need thereof.