Eye Light Delivery Control Using Multi-Angle Iris Detection
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Solution Overview
Problem
Existing ophthalmic treatments face challenges in accurately determining the eye state of patients, particularly during non-anesthetic procedures, leading to potential damage to healthy tissues and suboptimal therapeutic effects due to micromovements, tremors, and prolonged exposure to light energy.
Innovation Solution
An apparatus and method utilizing a light source device, image capture device, and actuating device, controlled by a controller, to collect multiple images of the eye from different angles, extract iris information, and adjust the light delivery based on the eye state to prevent tissue damage and enhance treatment efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional detection methods are used to monitor eye state during treatment, then treatment alignment can be maintained, but the ability to detect comprehensive eye state parameters (such as blinking, tremors, shaking) is insufficient
Solution Approach 1:
The image capture device serves multiple functions: it captures images for treatment alignment, detects eye state parameters (blinking, tremors, shaking), and provides feedback for real-time control. This multi-functionality improves detection accuracy without proportionally increasing system complexity.
Solution Approach 2:
The system continuously captures eye images, processes them to detect eye state parameters, and feeds this information back to control the light source device. This closed-loop feedback mechanism enables real-time adaptation to patient eye movements and states, improving detection accuracy dynamically.
2Reliability
If detection light is emitted continuously to monitor eye position, then alignment can be maintained, but excessive light energy is absorbed by the eye tissue
Solution Approach 1:
Instead of continuous light emission, the system uses periodic detection light pulses interspersed with therapeutic light delivery. This periodic action maintains alignment monitoring while significantly reducing total light energy absorption by the eye tissue.
Solution Approach 2:
The system performs preliminary eye state detection and alignment verification before each therapeutic light delivery cycle. This preliminary action ensures proper alignment is established before energy-intensive treatment begins, reducing the need for continuous monitoring during high-energy delivery.
3Measurement precision
If detection light is emitted during therapeutic treatment, then eye state can be monitored, but the detection light interferes with the therapeutic light effect
Solution Approach 1:
The system segments the treatment cycle into distinct phases: detection phase (with detection light), therapeutic phase (with therapeutic light), and transition phases. This temporal segmentation allows both detection and therapy to occur without interference, as each phase uses its designated light source exclusively.
Solution Approach 2:
The system alternates between detection light emission and therapeutic light delivery in periodic cycles. During detection phases, only detection light is emitted for eye state monitoring; during therapeutic phases, only therapeutic light is delivered. This periodic separation eliminates interference between the two light types.
4Productivity
If treatment time is extended to achieve thorough treatment, then therapeutic effect is improved, but patient eye stability deteriorates due to physiological factors and diverted attention
Solution Approach 1:
The system continuously monitors eye state parameters (blinking, tremors, shaking) throughout the extended treatment period and uses this feedback to adjust therapeutic light delivery in real-time. When eye movements or physiological changes are detected, the system adapts the treatment parameters to maintain effectiveness while accounting for reduced eye stability.
Solution Approach 2:
The system dynamically adjusts treatment parameters based on real-time eye state monitoring. Treatment duration, light intensity, and delivery frequency are modified on-the-fly in response to detected eye movements, blinking, or physiological changes, allowing the system to optimize treatment effectiveness while adapting to deteriorating eye stability during prolonged procedures.
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 system effectively detects eye states such as open, squinting, or closed, ensuring precise alignment and reducing light absorption, thereby minimizing tissue damage and improving therapeutic outcomes.
Implementation Method 1
a light source device configured to produce the therapeutic light or detection light
Implementation Method 2
processing the light signal reflected therefrom to obtain target position information
Data Source
Figure 1~2A
Figure 2B~2C
Figure 3A~3B
AI summary
The present application discloses an apparatus and a method for delivering therapeutic light or detection light to an eye tissue of a patient. The apparatus comprises a light source device, an image capture device, an actuating device, and a controller. The controller is coupled with the light source device, the image capture device, and the actuating device and configured to: control the image capture device to collect at least two images of the eye of the patient from different angles; extract at least iris information of the patient based on the at least two images collected from the different angles; determine the eye state of the patient based on at least the iris information; and control the light source device to or not to deliver the therapeutic light or detection light to the eye tissue of the patient and/or control the actuating device to move the light source device, based on the eye state of the patient.