Iris Imaging and Laser Tracking for Precise Eye Color Alteration
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Solution Overview
Problem
Conventional systems lack mechanisms for accurate delivery of laser light to large areas of the iris, particularly accounting for local absorption variations and iris tilt, which are necessary for effective eye color alteration procedures.
Innovation Solution
The methods and systems involve mapping the iris to determine spatially varying absorption coefficients, using a scanning pattern for laser delivery, and incorporating optical tracking to ensure precise alignment and monitoring for iris tilt during the procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional laser systems are used for eye treatment, then the system structure is simple, but the accuracy of laser light delivery to large areas of the iris is poor
Solution Approach 1:
The patent divides the iris treatment into multiple scanned regions, using a scanning mechanism to deliver laser light systematically across the entire iris surface. This segmentation allows precise control over large areas while maintaining manageable system complexity through automated scanning patterns.
Solution Approach 2:
The patent incorporates real-time optical tracking and feedback mechanisms to monitor iris position, tilt, and pigment absorption characteristics during the laser delivery process. This feedback enables dynamic adjustment of laser parameters to maintain delivery accuracy across varying anatomical conditions.
2Measurement precision
If conventional systems treat only localized points, then the device complexity is low, but the ability to account for local changes in laser light absorption is insufficient
Solution Approach 1:
The patent performs preliminary imaging and mapping of the iris to characterize pigment distribution and absorption coefficients before laser treatment begins. This preliminary analysis enables the system to pre-plan the laser scanning path and power settings to account for local absorption variations.
Solution Approach 2:
The patent dynamically adjusts laser parameters including power, pulse duration, and scanning speed based on real-time feedback about local absorption characteristics. This allows optimization of laser delivery for each specific region of the iris based on its unique pigment content.
3Manufacturing precision
If conventional systems do not account for iris tilt, then the system is simpler, but the accuracy of laser delivery to the iris is compromised
Solution Approach 1:
The patent employs optical tracking systems that continuously monitor iris position and tilt during the procedure. This feedback enables real-time compensation for iris tilt by adjusting the scanning pattern and laser delivery angles to maintain accurate focus on the intended treatment areas.
Solution Approach 2:
The patent makes the laser delivery system dynamic by continuously adjusting scan patterns and beam angles in response to changing iris orientation. This dynamic adaptation ensures maintained accuracy despite iris tilt while managing complexity through automated control algorithms.
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 approach allows for safe and effective alteration of eye color by selectively removing stromal pigment, overcoming the limitations of conventional methods such as colored contact lenses and iris implants, providing a natural appearance and reduced risk of complications.
Implementation Method 1
delivering laser light to portions of the eye that are responsible for giving the eye its color (e.g., the iris)
Implementation Method 2
determination of spatially varying absorption coefficients (of the laser light that is for treatment) in the iris
Data Source
AI summary
A method for altering an eye color of a patient with a color alteration procedure is disclosed that may include imaging the iris with an image sensor prior to the color alteration procedure to generate an image of the iris. A mapping of the iris may be generated from the image. The mapping may include a number of regions corresponding to varying absorption coefficients of a treatment wavelength in the stromal pigment of the iris. A laser system may be set, based on the mapping, to deliver laser light at a laser power sufficient to cause elimination of at least a portion of stromal pigment in the iris. The laser light may then be delivered with the laser system.