Customizable Target Presentation Device for Eye Examinations
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Solution Overview
Problem
Existing target presentation devices for eye examinations have fixed display formats for visual acuity values, which are not customizable, and the alignment of targets is often predetermined, limiting examiner convenience and examination accuracy as they cannot adapt to diverse examination requirements.
Innovation Solution
A target presentation device with a format setting mechanism that allows examiners to set display formats for visual acuity values based on operation signals, enabling customizable display formats and flexible alignment of targets to improve examination accuracy and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed display format for visual acuity values is used, then the device structure is simple, but the adaptability to different examination requirements is poor
Solution Approach 1:
The patent implements a format setting mechanism that allows the display format of visual acuity values to be dynamically changed based on examination requirements. The controller can switch between different display formats (e.g., decimal format, fraction format) according to the set visual acuity value, making the device adaptable to various examination standards without requiring multiple fixed-format devices.
2Adaptability or versatility
If target alignment is predetermined to avoid overlap, then the device complexity is reduced, but the flexibility for diversified examination combinations is limited
Solution Approach 1:
The patent employs a controller that dynamically adjusts target alignment based on the selected targets and examination requirements. When targets are switched, the controller recalculates and adjusts their positions to prevent overlap while accommodating diverse examination combinations. This dynamic alignment control enables flexibility in target selection without requiring complex predetermined alignment patterns.
3Ease of operation
If the display format of visual acuity values is fixed, then the ease of operation is maintained, but the convenience for examiners with different regional preferences is reduced
Solution Approach 1:
The patent incorporates a universal display system that can present visual acuity values in multiple formats (decimal, fraction, etc.) depending on the examination standard and examiner preference. The format setting mechanism allows the same device to serve different regional examination requirements, making it a multi-functional tool that maintains ease of operation while adapting to various user needs.
Data Source
AI summary
There is provided a target presentation device for presenting a target to a subject eye. The target presentation device including a format setting means that sets a display format of a visual acuity value of an examination target used in an examination of the subject eye, based on an operation signal, and an output means that outputs a target to be presented to the subject eye, based on the visual acuity value represented in the display format set by the format setting means.