Smartphone Astigmatism Detection via Image Processing
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Solution Overview
Problem
Current methods for determining astigmatic effects in eyes require optometrists or ophthalmologists, sophisticated devices, and are costly, making them inaccessible on a global scale and difficult to use without proper communication between professionals and patients.
Innovation Solution
A method using a mobile communication device to display an image with varying line sections, record the user's reaction, and determine astigmatic effects by evaluating transitions on the line, allowing for self-assessment without specialized equipment or professionals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sophisticated autorefractive devices are used to determine astigmatic effects, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses a smartphone camera to capture images of the eye and creates a digital copy of the eye's optical characteristics. Instead of using complex autorefractive devices, the system copies visual information from a simple camera image to extract astigmatic effects through image processing algorithms, thereby reducing device complexity while maintaining measurement precision.
Solution Approach 2:
The patent replaces mechanical optical measurement systems with a digital image processing system. Instead of using physical lenses and optical instruments to measure astigmatism, the system uses software algorithms to analyze images captured by a smartphone camera, substituting mechanical measurement mechanisms with computational methods.
2Measurement precision
If subjective approaches with optometrists are used, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent enables individuals to perform self-diagnosis of astigmatic effects using their own smartphones. The system automatically captures eye images, processes them to determine astigmatic effects, and provides results without requiring professional optometrists or ophthalmologists, thereby improving ease of operation while maintaining measurement precision through automated algorithms.
Solution Approach 2:
The patent introduces a smartphone and image processing system as an intermediary between the user and professional measurement. Instead of directly requiring interaction with an optometrist, the system acts as a mediator that autonomously performs the measurement and analysis, eliminating the need for professional intervention while maintaining accurate results.
3Measurement precision
If multiple lenses and patterns are used for determination, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential function of astigmatism measurement from complex multi-lens systems and isolates it to a single smartphone camera. By taking out only the necessary imaging capability and replacing the rest with software algorithms, the system achieves measurement precision without requiring multiple physical lenses or complex optical configurations.
Data Source
AI summary
A method, a computer program, and a device for determining at least one astigmatic effect of at least one eye of a person are disclosed, as well as a related method for producing at least one spectacle lens for the at least one eye of the person. The method for determining the astigmatic effect includes:a) displaying an image to an eye of the person, the image including a line with a plurality of sections, wherein an orientation of each section with respect to an optical axis of the image differs from each other, respectively;b) recording a reaction of the person to the image at at least one point in time; andc) determining at least one value for at least one astigmatic effect of at least one eye of the person by evaluating the at least one reaction of the person at the point in time.