Computer-Based Progressive Lens Selection System
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Solution Overview
Problem
The complexity of selecting a suitable progressive addition lens design for individual wearers is exacerbated by the large array of available designs and varying lifestyle activities, often resulting in lenses that do not meet specific visual needs, leading to inconsistent dispensing and wearer dissatisfaction.
Innovation Solution
A system and process utilizing a programmed computer to process lens usage information, calculating weighted lifestyle scores based on activity-specific data, to select or design ophthalmic lenses, including progressive addition lenses, that are customized to match the wearer's lifestyle and visual requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large array of progressive lens designs is made available to meet diverse wearer needs, then the adaptability to individual lifestyle requirements is improved, but the device complexity and difficulty of selection increase
Solution Approach 1:
A computer-based selection system acts as an intermediary between the wearer's lifestyle requirements and the array of progressive lens designs. The system processes lifestyle information through structured questionnaires and algorithms to automatically recommend suitable lens designs, eliminating the complexity of manual selection while maintaining high adaptability to individual needs
Solution Approach 2:
The system transforms qualitative lifestyle information into quantitative parameters and weighted scores that can be processed computationally. By converting lifestyle characteristics into measurable parameters, the system enables objective comparison and selection among multiple lens designs without requiring complex human decision-making
2Reliability
If progressive addition lenses are designed to optimize performance for specific activities, then the wearer satisfaction for those activities is improved, but the lens design complexity increases
Solution Approach 1:
The system applies local quality by optimizing specific lens design features for specific lifestyle requirements. Rather than creating entirely different lens designs for each activity, the system adjusts particular parameters (such as corridor length, zone sizes, and power distribution) based on the wearer's dominant activities, achieving activity-specific optimization through localized parameter modification
3Ease of operation
If manual lens selection processes are used by dispensers, then the ease of operation is maintained, but the consistency and reliability of lens selection across different locations deteriorates
Solution Approach 1:
The system enables self-service by allowing the computer to automatically perform the lens selection function based on standardized lifestyle assessments. This eliminates variability introduced by different dispensers while maintaining ease of operation through automated processing, ensuring consistent results across all dispensing locations
Data Source
AI summary
The present invention involves the prescribing and/or dispensing ophthalmic lenses, such as progressive addition lenses, for a wearer. In one form of the invention lens usage information is obtained from a wearer and entered into a programmed computer. The programmed computer processes the lens usage information to provide a separate weighted lifestyle score for each of one or more respective lifestyle score categories, such that each weighted lifestyle score is a function of a predetermined relationship between the respective lifestyle score category and at least ophthalmic lens design feature. The programmed computer then selects or designs an ophthalmic lens design using one or more of the weighted lifestyle scores such that the selected or designed ophthalmic lens has at least one lens design feature which has been customised using one or more of the weighted lifestyle scores.