Digital 3D Slit Lamp with Adaptive Infrared Intensity Control
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Solution Overview
Problem
Current slit lamps for ophthalmic diagnosis lack the ability to optimize infrared light intensity for retinal examination, leading to potential phototoxicity and inadequate detection of lesions, especially in the retina, where cancerous lesions have a slight temperature difference that is difficult to identify accurately.
Innovation Solution
A digital 3D slit lamp apparatus using solid-state LEDs for both visible and infrared light, with adjustable intensity based on pupil measurements and area of illumination, coupled with thermal imaging for enhanced lesion detection and minimization of phototoxicity, allowing for real-time 3D image creation and remote review.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If infrared light intensity is increased to improve lesion detection, then detection capability is improved, but phototoxicity risk increases
Solution Approach 1:
The system dynamically adjusts infrared light intensity based on real-time pupil diameter measurements and retinal illumination area calculations. The controller continuously modifies light output to maintain optimal detection levels while preventing phototoxicity, transforming the static light source into an adaptive system that responds to changing physiological conditions.
Solution Approach 2:
The system implements a feedback loop where pupil diameter is measured, used to calculate required light intensity, which is then applied and monitored. The controller receives feedback from pupil measurements and adjusts infrared intensity accordingly, creating a closed-loop control system that balances detection capability with safety.
2Object-affected harmful factors
If infrared light intensity is decreased to reduce phototoxicity, then safety is improved, but lesion detection capability deteriorates
Solution Approach 1:
The system changes the parameter of light intensity dynamically based on pupil size. By adjusting this critical parameter according to real-time measurements, the system optimizes the balance between safety and detection capability, ensuring adequate illumination for lesion detection while maintaining safe exposure levels.
Solution Approach 2:
The light intensity is transformed from a static setting to a dynamic variable that adapts to pupil measurements. This dynamic adjustment allows the system to provide maximum safe illumination for detection while preventing phototoxicity, resolving the contradiction between safety and detection capability.
3Object-affected harmful factors
If pupil measurement and intensity adjustment system is added, then safety and optimization are improved, but device complexity increases
Solution Approach 1:
The controller serves multiple functions: it controls infrared light intensity, processes pupil diameter measurements, calculates required light levels, and monitors safety parameters. By consolidating these functions into a single multi-functional controller, the system reduces overall complexity while achieving comprehensive safety and optimization.
Solution Approach 2:
The system merges the pupil measurement capability, calculation function, and light control into an integrated unit. The controller combines multiple functions that could have been separate components, reducing device complexity while maintaining the ability to measure, calculate, and adjust infrared intensity for safety and optimization.
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
This solution enables optimized infrared light intensity for retinal examination, improving lesion detection and reducing phototoxicity risks by using thermal imaging to differentiate between healthy and diseased tissue, providing accurate 3D digital images for enhanced diagnostic capabilities.
Implementation Method 1
a wavelength of light that is poorly absorbed by the retina and eyes photoreceptors... infrared light source... infrared measuring systems can identify between healthy tissue and a disease state
Implementation Method 2
cancerous lesions have a slight temperature difference that is difficult to identify accurately... thermal imaging for enhanced lesion detection
Implementation Method 3
detect a reflection of the narrow beam of white light by structures of the eye... detecting a reflection of said beam of light by structures of the eye
Data Source
AI summary
The invention relates to a device and method of ophthalmic diagnosis of lesions on retina utilizing a slit lamp apparatus with a pupil reader and at least one visible LED and one Infrared LED to detect a lesion on the retina of an eye.