Optometric Program for Prism Prescription Calculation
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Solution Overview
Problem
Conventional subjective optometric devices lack the capability to calculate a suitable prism amount for prescriptions based on heterophoria and convergence or divergence measurements, often resulting in unsuitable values and increased examination time for patients.
Innovation Solution
A program and apparatus that measure heterophoria, guide examinations for Sheard criterion identification, and calculate prism amounts for prescriptions using a computer-based system with display units for convergence and divergence tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional subjective optometric devices are used without prism calculation capability, then the device complexity is reduced, but the manufacturing precision of prescriptions deteriorates due to unsuitable prism values
Solution Approach 1:
The optometric device automatically calculates suitable prism amounts using pre-stored calculation formulas and measured heterophoria data, enabling the system to prescribe accurate prism values without requiring external calculation tools or manual computation by the examiner
Solution Approach 2:
A computer-based calculation system acts as an intermediary between the optometric measurement device and the prescription output, processing heterophoria measurements through stored formulas to generate accurate prism prescription values
2Reliability
If Sheard criterion identifying tests are implemented, then the reliability of prism prescription is improved, but the examination time increases
Solution Approach 1:
The system performs preliminary calculations of suitable prism amounts based on measured heterophoria data using pre-stored formulas, providing examiners with recommended values before final prescription decisions are made
Solution Approach 2:
The calculation system provides feedback to examiners by displaying suitable prism amounts derived from measured data, allowing examiners to verify and adjust prescriptions based on objective computational results
Data Source
AI summary
The present invention is directed to a program for optometry, which is used for a control device. The program includes a first unit to measure an amount of heterophoria of eyes of an examinee to be examined in a horizontal heterophoria examination, a second unit to display an operating method to allow the examinee to implement a Sheard criterion identifying examination on a display device, a third unit to allow the examinee to implement a convergent or divergent test of the eyes based on the operating method, and a fourth unit to calculate a prism amount for prescriptions based on the heterophoria amount and the convergence or divergence of the eyes.