Fundus Therapy Optics With OCT-Guided Eye Movement Compensation
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Solution Overview
Problem
Conventional low-intensity laser therapy for eye diseases struggles with precise positioning due to eye vibration, leading to rough illumination of large areas rather than targeted treatment, and requires time-consuming post-therapy imaging for effect determination.
Innovation Solution
An optical system integrating a light source device, gaze module, and fundus detection device, utilizing light scanning and intensity modulation, along with optical coherence tomography for precise control of light dose and depth, to scan and treat specific areas while compensating for eye movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional low-intensity laser therapy is used to treat eye diseases, then the blood circulation of the retina and choroid tissue can be improved, but the treatment cannot be precisely positioned due to eye vibration, resulting in rough illumination of large areas
Solution Approach 1:
The patent combines the light source device for therapy with the fundus detection device into an integrated system. This merging allows the system to both deliver low-intensity laser therapy and capture fundus images through the same optical path, enabling real-time visualization and precise positioning compensation for eye vibrations during treatment
Solution Approach 2:
The system uses real-time fundus image feedback to track and compensate for eye vibrations. By continuously monitoring the fundus position through the detection device and adjusting the light irradiation accordingly, the system maintains precise positioning despite natural eye movements during therapy
2Reliability
If conventional light therapy is used, then the treatment can be applied to eye diseases, but the therapeutic effect cannot be determined quickly as it requires taking fundus images with other instruments after treatment
Solution Approach 1:
The integrated system combines therapy and detection functions in one device, allowing fundus imaging to be performed through the same optical path as light delivery. This eliminates the need to switch between separate instruments and enables immediate post-treatment imaging for rapid effect evaluation
Solution Approach 2:
The system enables continuous operation where treatment and monitoring are performed sequentially without interruption or instrument changes. The fundus detection can be performed immediately after light therapy in the same session, maintaining continuous clinical workflow and providing timely therapeutic effect assessment
3Device complexity
If a single light source is used, then the device structure can be simplified, but the light cannot be precisely modulated to irradiate specific positions and ranges
Solution Approach 1:
The patent employs dynamic scanning mechanisms (acoustic or electronic) that enable a single light source to rapidly switch and irradiate different positions and ranges on the fundus. This dynamic control allows precise modulation of light delivery to specific areas without requiring multiple fixed light sources, maintaining simple device structure while achieving precise spatial control
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
Achieves precise, five-dimensional (3D space, time, light dose) treatment by focusing on localized areas, adjusting light dose based on retinal layer thickness, and enabling direct post-treatment imaging for treatment effect tracking.
Implementation Method 1
irradiating the eyes with hand-held or fixed low-intensity infrared lasers (670 nm or 780 nm, 10 mW or less)
Implementation Method 2
analyzed by the optical coherence tomography scanner, so as to precisely control the dose of light therapy
Data Source
AI summary
An optical system and an operating method thereof are disclosed. The optical system includes a light source device, a gaze module and a fundus detection device. The light source device includes a light source module, a light intensity modulation module and a lens module. The light source module is used to emit a therapy light to an eye. The light intensity modulation module is used to modulate an intensity of the therapy light. The lens module is used to control a depth of the therapy light. The gaze module is used to be gazed by the eye to fix a fundus of the eye. The fundus detection device and the light source device are integrated to detect the fundus to obtain a fundus image.