Laser Energy Adjustment for Corneal Optical Density
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Solution Overview
Problem
Current surgical systems fail to effectively adjust laser energy based on optical density, which can impair vision by reducing light transmission through cloudy corneas due to conditions like chemical burns, surgery, trauma, or disease.
Innovation Solution
A system comprising a laser device and a control computer that receives optical density measurements, determines and adjusts laser energy accordingly, and directs the laser beam through the outer portion of the eye to a target portion, using image capture systems like Scheimpflug or OCT to calculate optical density and adjust laser pulse energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If laser energy is increased to penetrate cloudy cornea, then light transmission to target is improved, but damage to surrounding tissue increases
Solution Approach 1:
The system applies different laser energy levels to different regions of the cornea based on local optical density measurements. Areas with higher cloudiness receive higher energy, while clearer areas receive lower energy, ensuring effective penetration without unnecessary damage to surrounding healthy tissue.
Solution Approach 2:
The laser energy parameter is dynamically adjusted based on real-time optical density measurements. The control computer modifies the laser energy level according to the measured optical properties of the cornea, allowing precise compensation for varying cloudiness levels across different regions.
2Object-affected harmful factors
If laser energy is decreased to minimize tissue damage, then surrounding tissue protection is improved, but light transmission through cloudy cornea is insufficient
Solution Approach 1:
The system identifies specific regions of the cornea with cloudiness and concentrates higher laser energy only on those affected areas. Healthy regions receive minimal or no laser energy, thus protecting them from damage while ensuring adequate treatment of the cloudy portions.
Solution Approach 2:
The system performs preliminary optical density mapping of the cornea before laser treatment. This pre-assessment allows the control computer to plan the laser energy distribution, directing higher energy only to regions that require it while protecting healthy areas from unnecessary exposure.
3Ease of operation
If uniform laser energy is applied across the cornea, then ease of operation is improved, but precision in compensating for optical density variations is reduced
Solution Approach 1:
The system transitions from static uniform laser energy application to dynamic energy modulation. The laser energy level is continuously adjusted based on real-time optical density feedback, allowing the system to adapt to varying corneal properties while maintaining automated control that preserves ease of operation.
Solution Approach 2:
The system incorporates optical density measurement feedback to automatically adjust laser energy levels. The control computer receives real-time measurements of corneal optical properties and modifies the laser parameters accordingly, eliminating the need for manual adjustment while achieving precise compensation for optical density variations.
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 allows for precise adjustment of laser energy to compensate for optical density variations, improving light transmission and vision by effectively photodisrupting targeted tissue while minimizing damage to surrounding areas.
Implementation Method 1
directs the laser beam with the laser energy through the outer portion of the eye towards the target portion of the eye
Data Source
AI summary
In certain embodiments, a device comprises a laser device and a control computer. The laser device directs a laser beam with laser energy through an outer portion of an eye to a target portion of the eye. The control computer receives an optical density measurement of the outer portion, determines the laser energy according to the optical density measurement, and instructs the laser device to direct the laser beam with the laser energy through the outer portion of the eye to the target portion of the eye.