Ophthalmological Teaching Device With 3D Eye-Image Display
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Solution Overview
Problem
Existing ophthalmological teaching aids lack realism and accuracy in simulating patient eyes for educational purposes.
Innovation Solution
A housing with a transparent structure and a display card containing a U-shaped bend with printed images of actual patient eyes, combined with a magnifying lens, providing a 3-dimensional view of eye conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional teaching aids are used, then the device complexity is low, but the realism and accuracy of eye representation is insufficient
Solution Approach 1:
The patent uses printed photographs of actual patient eyes on the inner surface of the display card to create realistic representations. This copying approach replaces simplified diagrams with authentic visual data, achieving high accuracy in eye representation while keeping the overall device structure relatively simple.
Solution Approach 2:
The patent transitions from two-dimensional diagrams to three-dimensional representation by curving the display card to form a bowl-shaped structure that mimics the curvature of the human eye. This dimensional change enhances realism and allows students to view eye conditions from multiple angles, improving measurement precision without significantly increasing complexity.
2Measurement precision
If a display card with printed eye photographs is used, then the realism is improved, but the ease of manufacture decreases
Solution Approach 1:
Using printed photographs of actual patient eyes on the display card achieves high realism. The manufacturing process involves printing images on card material, which is a straightforward and cost-effective method that maintains ease of manufacture while significantly improving the realism of eye representation for educational purposes.
Solution Approach 2:
The display card is curved to form a bowl shape that matches the curvature of the human eye. This curvature is achieved through forming processes that can be integrated into standard manufacturing, allowing the card to be produced efficiently while achieving the realistic three-dimensional representation needed for accurate eye condition visualization.
3Shape
If the display card is curved to form a bowl shape, then the 3-dimensional view is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The display card is formed into a bowl shape with a radius of curvature that approximates the human eye's curvature. This design choice provides sufficient three-dimensionality for educational purposes while avoiding the need for extremely precise manufacturing tolerances. The curvature is designed to be visually effective rather than perfectly accurate, balancing manufacturing feasibility with educational value.
Solution Approach 2:
The patent specifies that the display card should have a certain degree of curvature to form a bowl shape, but does not require exact matching of eye curvature parameters. By using approximate curvature parameters, the manufacturing process becomes more feasible while still achieving the desired three-dimensional representation for teaching eye conditions from multiple angles.
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
Enhances teaching by offering a realistic and accurate representation of patient eyes, facilitating better understanding and practice for medical students.
Implementation Method 1
combined with a magnifying lens, providing a 3-dimensional view of eye conditions
Data Source
AI summary
An instructional device has a housing with a housing top wall, a housing bottom wall, and a housing side wall. A viewing opening is located at the housing top wall. A display card having U-shaped bend at the bottom wall. The display card has an inner surface and is contained within the interior space of the housing. Printed matter in the form of actual photograph of an eye, is located on the inner surface of the display card at the bottom wall and the side wall. An attachment apparatus is provided to couple the instructional device to the forehead rest of optical examination equipment to facilitate training on the medical equipment.