Presbyopia Measurement via Smartphone Optical Projection
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Solution Overview
Problem
Current methods for measuring presbyopia are often inaccurate and rely on trial and error, lacking standardized measurements for near and mid-vision distances.
Innovation Solution
An optical device that projects images onto the user's retina as if they originated at near or mid-vision distances, utilizing a smartphone as a light source and adjustable lenses to measure visual acuity and provide correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If trial and error methods are used to measure presbyopia, then the measurement process is simple and accessible, but the measurement precision is poor
Solution Approach 1:
The patent introduces an optical device as an intermediary between the user and the measurement process. This device includes optical elements (lenses) that project images onto the user's retina, creating a controlled optical pathway that enables precise measurement of presbyopia without requiring complex subjective testing procedures. The intermediary device translates complex optical measurements into simple user interactions.
Solution Approach 2:
The patent replaces traditional mechanical trial-and-error methods with an optical system. Instead of physically trying different lens powers, the system uses optical projection and retinal imaging to determine the appropriate correction. This substitution of mechanical procedures with optical principles maintains simplicity while dramatically improving measurement precision.
2Measurement precision
If standardized measurements for near and mid-vision distances are implemented, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The patent employs dynamic optical elements that can adjust their position or configuration to create different viewing distances (near and mid-vision). The optical system dynamically projects images at varying distances onto the retina, enabling standardized measurements for multiple vision zones without requiring separate devices or complex multi-distance testing setups.
Solution Approach 2:
The optical device is designed to perform multiple measurement functions through a single system. It can measure near-vision acuity, mid-vision acuity, and presbyopia correction requirements using the same optical pathway and retinal projection mechanism. This multi-functionality reduces the need for multiple specialized devices while maintaining high measurement precision across different vision distances.
3Measurement precision
If iterative testing and adjustment are used to achieve acute near and mid-vision acuity, then the measurement precision improves, but the time consumption increases
Solution Approach 1:
The optical system performs preliminary measurements and calculations to determine the user's baseline presbyopia condition before initiating iterative adjustments. By pre-characterizing the user's optical system and making initial predictions about required correction, the system reduces the number of iterative steps needed to achieve precise measurement, thereby maintaining accuracy while reducing overall testing time.
Solution Approach 2:
The patent implements a feedback mechanism where the optical system continuously monitors the user's visual response to projected images and automatically adjusts the optical parameters. This closed-loop feedback system accelerates the iterative process by making intelligent, data-driven adjustments rather than requiring manual trial-and-error, thus achieving high precision visual acuity measurements more efficiently.
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
Enables precise measurement and correction of presbyopia, allowing users to achieve acute near and mid-vision acuity through iterative testing and adjustment.
Implementation Method 1
An optical device that projects images onto the user's retina as if they originated at near or mid-vision distances, utilizing a smartphone as a light source and adjustable lenses to measure visual acuity
Data Source
AI summary
Various presbyopia measurement systems are presented. Solutions include a consumer friendly system using a consumer's smart phone to present a test image. The test image by be viewed through a first lens, second lens and optional added lens such that the image is perceived to be approximately eight inches to two feet away from the consumer's eye. In addition to a lens system that may be attached to a consumer's smart phone, the systems presented include a presbyopia kit that my comprise an eyeglass kit comprising near vision attachments, mid vision attachments, clip on lenses and Plano frames. Disclosed systems include the use of the use of both the eyeglass kit and lens system that attaches to the consumer's phone.