Wearable Visual Function Testing Apparatus with Tunable Lens
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional visual function testing apparatuses require significant space, are bulky, and necessitate multiple devices for comprehensive testing, making them expensive and inefficient, especially due to the need for separate apparatuses for each aspect of vision testing and the complexity of correcting refraction errors before assessing visual field.
Innovation Solution
A portable, wearable apparatus with tunable lens optics and an integrated visual stimulus generator controlled by a computational device for comprehensive vision testing, allowing for refraction error correction and automated testing in a single device, eliminating the need for multiple apparatuses and large spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional visual function testing apparatuses are used, then comprehensive vision testing can be performed, but the apparatus requires significant space and are bulky
Solution Approach 1:
The patent combines multiple visual function testing capabilities (visual acuity, visual field, refraction testing) into a single integrated head-mounted apparatus. The display device, tunable lens, and stimulus presentation system are merged into one compact unit that can perform comprehensive vision testing without requiring multiple separate apparatuses
Solution Approach 2:
The head-mounted apparatus is designed to perform multiple visual function tests simultaneously or sequentially. The system can switch between different test modes (acuity, field, refraction) using the same hardware components, making it a universal testing device that eliminates the need for multiple specialized apparatuses
2Adaptability or versatility
If multiple apparatuses are used for comprehensive testing, then complete vision assessment can be achieved, but equipment costs and maintenance expenses increase
Solution Approach 1:
The system uses a single multi-functional apparatus that can perform visual acuity testing, visual field testing, and refraction correction. This eliminates the need to purchase, install, and maintain multiple separate devices, significantly reducing equipment costs and operational expenses
3Measurement precision
If separate apparatuses are used for refraction correction and visual field testing, then accurate testing can be performed, but the testing process becomes complex and requires multiple visits
Solution Approach 1:
The patent integrates refraction correction and visual field testing into a single head-mounted apparatus. The tunable lens for refraction correction and the visual field stimulus presentation are combined in one device, allowing both functions to be performed during a single testing session without requiring multiple visits or complex coordination between separate devices
Solution Approach 2:
The system performs refraction correction before visual field testing within the same session. The tunable lens is adjusted to correct the subject's refraction errors first, and then visual field testing is conducted with the corrected vision, ensuring accurate results while simplifying the overall process
4Measurement precision
If conventional visual acuity testing with six-meter distance is used, then accurate visual acuity measurement can be obtained, but the apparatus requires large space
Solution Approach 1:
The patent uses a display device that presents visual acuity stimuli optically to create the effect of a distant chart. The display shows visual acuity charts or targets that simulate the appearance and optical characteristics of a standard six-meter distant Snellen chart, allowing accurate visual acuity measurement in a compact space without requiring actual physical distance
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
Enables comprehensive vision testing, including refraction correction, in a single visit, reducing equipment costs and space requirements while streamlining clinician workflow and improving testing efficiency by integrating multiple tests into a single, portable device.
Implementation Method 1
a tunable lens which is controllable by application of voltage for correcting errors in refraction
Data Source
AI summary
This disclosure discloses an apparatus and method thereof for a comprehensive visual function testing apparatus. A plurality of visual test stimuli may be spatiotemporally sequenced and presented to the subject undergoing visual function tests including, but not limited to, visual acuity test, stereoscopic vision test, field of vision test and contrast sensitivity test. Furthermore, by combining all the elements under the same computational device, it streamlines the conventional visual function testing process, provides automated visual function testing of subjects, and refraction correction when required, such as for perimetry testing. Such an apparatus opens up unprecedented possibilities for refining the visual function testing process. High degree of integration resulting from adoption of the features disclosed, a variety of compact, portable, wearable embodiments may be achieved.