Red-Light Fundus Irradiation Control Using Pupil-State Feedback
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Solution Overview
Problem
Existing red-light irradiation methods for myopia physiotherapy fail to account for varying eye features, leading to inconsistent and potentially harmful irradiation power on the fundus.
Innovation Solution
A method and device that control red-light irradiation by acquiring and analyzing ocular surface images to determine pupil state information, adjusting light source power based on pupil size, distance, and direction, ensuring consistent and safe irradiation on the fundus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If unified red-light irradiation operation is used, then the operation is simple and easy to implement, but the actual in-eye light power fails to reach the expected value due to varying eye features
Solution Approach 1:
The system dynamically adjusts the light source power parameter based on detected pupil size. The control module modifies the irradiation power to compensate for variations in pupil diameter, ensuring that the actual in-eye light power reaches the expected therapeutic value despite individual differences in eye features.
Solution Approach 2:
The system implements a feedback loop where the detection module continuously monitors pupil size during irradiation, and the control module uses this information to adjust the light source power in real-time. This closed-loop control ensures accurate delivery of the prescribed light power to the fundus.
2Reliability
If red-light irradiation power is increased to ensure therapeutic effect, then the therapy effectiveness is improved, but potential risks and injuries may occur
Solution Approach 1:
The system adjusts the light source power parameter dynamically based on pupil size measurements. By calculating the appropriate power level that accounts for the actual pupil diameter, the system delivers the exact therapeutic dose needed without exceeding safe limits, thereby preventing eye injuries while maintaining therapy effectiveness.
Solution Approach 2:
The system replaces manual power setting with an automated control system that uses optical detection (pupil size measurement) to determine the appropriate irradiation power. This substitution of mechanical/manual adjustment with sensor-based automated control eliminates human error and ensures safe, precise power delivery.
3Reliability
If personalized irradiation control based on pupil size is implemented, then the myopia physiotherapy effectiveness is improved, but the device complexity increases
Solution Approach 1:
The detection module serves multiple functions: it detects pupil size for power control, monitors pupil position for alignment, and provides real-time feedback during irradiation. This multi-functionality reduces the need for separate specialized components, thereby limiting the increase in device complexity while achieving personalized control.
Solution Approach 2:
The system combines the detection module and control module into an integrated control system that works seamlessly with the light source. By merging these functions into a coordinated system rather than separate independent components, the overall device complexity is minimized while still providing personalized irradiation control based on pupil size.
Data Source
AI summary
Disclosed is a red-light irradiation control method for myopia physiotherapy. The method comprises: acquiring an ocular surface image of a user (S102); analyzing the ocular surface image to determine state information of a pupil (S104); and controlling, based on the state information of the pupil and a red-light irradiation in-eye light power of the user, red-light irradiation on a fundus of the user (S106). With the red-light control solution of the present disclosure, safe, effective and personalized fundus red-light irradiation may be provided for each user according to the specific eye features (for example, a pupil state) and red-light irradiation in-eye light power of the user, so that the efficiency of myopia physiotherapy may be obviously improved.