Predictive Eye Modeling for Corrective Lens Prescriptions
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Solution Overview
Problem
Existing eye examination methods, particularly those using autorefractors and phoropters, suffer from imprecision due to accommodation, depth of focus, and spherical aberrations, leading to flawed prescriptions and limited access to quality eyecare due to equipment costs and inefficiencies.
Innovation Solution
A system and method that uses predictive calculations and corrected-eyesight simulation to generate a digital model of the patient's eye, accounting for multiple parameters like age, gender, and toric shape, and performs optical ray tracing to determine a precise eyeglass prescription without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autorefractor is used for objective refraction, then the eye examination process is automated and efficient, but the prescription precision deteriorates due to accommodation, depth of focus, and spherical aberrations
Solution Approach 1:
The patent creates a digital copy of the patient's eye using ray tracing simulations that model the eye's optical system. This digital model replicates the physical eye's refractive properties, allowing virtual testing of different prescriptions without physical phoropter equipment. The simulation captures complex optical phenomena like spherical aberration and accommodation, providing precise prescription determination while maintaining automated efficiency.
Solution Approach 2:
The patent replaces the mechanical phoropter system with a computational ray tracing system. Instead of physically rotating lenses in front of the patient's eye, the system uses computer simulations to model light propagation through the eye's optical system. This substitution eliminates mechanical complexity while improving measurement precision by accounting for optical phenomena that mechanical systems cannot easily measure.
2Measurement precision
If phoropter is used for subjective refraction, then prescription precision is improved by eliminating autorefractor imprecision, but device complexity, cost, and time consumption increase
Solution Approach 1:
The patent creates a digital copy of the patient's eye using ray tracing simulations that model the eye's optical system. This digital model replicates the physical eye's refractive properties, allowing virtual testing of different prescriptions without physical phoropter equipment. The simulation captures complex optical phenomena like spherical aberration and accommodation, providing precise prescription determination while maintaining automated efficiency.
Solution Approach 2:
The patent replaces the mechanical phoropter system with a computational ray tracing system. Instead of physically rotating lenses in front of the patient's eye, the system uses computer simulations to model light propagation through the eye's optical system. This substitution eliminates mechanical complexity while improving measurement precision by accounting for optical phenomena that mechanical systems cannot easily measure.
3Reliability
If traditional eye examination methods are used, then comprehensive eye assessment is performed, but access to quality eyecare is limited due to equipment cost and time requirements
Solution Approach 1:
The patent creates a digital copy of the patient's eye using ray tracing simulations that model the eye's optical system. This digital model replicates the physical eye's refractive properties, allowing virtual testing of different prescriptions without physical phoropter equipment. The simulation captures complex optical phenomena like spherical aberration and accommodation, providing precise prescription determination while maintaining automated efficiency.
Solution Approach 2:
The patent replaces the mechanical phoropter system with a computational ray tracing system. Instead of physically rotating lenses in front of the patient's eye, the system uses computer simulations to model light propagation through the eye's optical system. This substitution eliminates mechanical complexity while improving measurement precision by accounting for optical phenomena that mechanical systems cannot easily measure.
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 reduces human error, saves time and cost, and increases access to quality eyecare by providing accurate prescriptions, allowing eye care professionals to see more patients and improve service quality.
Implementation Method 1
performs optical ray tracing to determine a precise eyeglass prescription
Data Source
AI summary
This is a system and method for determining a patient's prescription for corrective lenses using predictive calculations and corrected-eyesight simulation. Together, these technologies act as a digital substitute for phoropter testing, thus reducing the cost, time, and human error associated with an eye exam. Based on age, gender, autorefractor readings, and environmental factors, a patient specific model is calculated and fed into a visual simulation tool. From this simulation, an eye care professional is able to determine the patient's corrective lens prescription.