Dynamic Scrolling Text Visual Acuity Measurement
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Solution Overview
Problem
Conventional visual acuity measurements are limited by the need for multiple static text cards, which introduce delays and reduce the effectiveness of the testing process, especially in medical contexts, as they fail to dynamically assess reading characteristics and acuity.
Innovation Solution
A device and method that dynamically presents scrolling text with adjustable parameters like font size, brightness, and contrast, allowing for real-time measurement of reading accuracy, speed, and visual acuity using a processor and input devices to generate acuity parameters based on reading scores and readability vectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple static text cards are used to assess visual acuity, then reading characteristics can be evaluated, but testing time increases and effectiveness decreases
Solution Approach 1:
The patent transforms static text cards into dynamic scrolling text displayed on a screen. The text scrolls horizontally across the display at controlled speeds, allowing multiple text passages to be presented in a continuous stream without requiring physical card changes. This dynamic presentation maintains measurement precision while dramatically reducing testing time.
Solution Approach 2:
The display system serves multiple functions: it presents text at various scrolling speeds, adjusts font sizes, controls brightness and contrast, and displays different text passages sequentially. This single device replaces the need for multiple static cards, achieving both time efficiency and comprehensive visual acuity assessment.
2Adaptability or versatility
If multiple static text cards are presented to assess different text characteristics, then comprehensive visual acuity evaluation is possible, but the testing process becomes complex and delayed
Solution Approach 1:
The display system integrates multiple text presentation capabilities into a single device. It can vary scrolling speed, font size, brightness, and contrast dynamically, allowing comprehensive assessment of different text characteristics without requiring multiple separate cards or devices. This reduces process complexity while maintaining adaptability.
Solution Approach 2:
The system changes multiple parameters of text presentation simultaneously - scrolling speed, font size, brightness, and contrast - to assess visual acuity under varying conditions. These parameter changes are controlled through software, simplifying the testing process compared to manually managing multiple static cards with different characteristics.
3Loss of time
If static text cards are used for visual acuity testing, then reading time can be measured, but real-time data analysis and treatment efficacy evaluation are limited
Solution Approach 1:
The system incorporates real-time feedback mechanisms where the processor analyzes reading accuracy, speed, and comprehension as the patient reads scrolling text. This immediate data collection and analysis provides continuous feedback on visual acuity and reading characteristics, enabling timely assessment of treatment efficacy without the information loss associated with static card methods.
Data Source
AI summary
Provided herein are devices, systems, methods, apparatuses, and computer program products for determining a visual acuity of a reader. The device includes a display adapted to present a first line of text to the reader and an input device adapted to receive signals corresponding to the first line of text. The device further includes a processor that is adapted to determine a reading score associated with the first line of text, generate an acuity parameter based on the reading score and the first readability vector, and determine the visual acuity of the reader based on the acuity parameter and a reference acuity parameter.