Application
Vision testing for non-verbal children, the hearing impaired, and non English-speaking population.
Key Benefits
- Simplifies vision testing for non-verbal children.
- Does not require any verbal communication to be used effectively.
Technical Summary
While traditional eye charts are often effective, they rely on verbal communication and at least a rudimentary understanding of the English language. A prominent children’s eye chart, the Lea chart, uses four symbols instead of letters (circle, square, house, and apple). This chart, however, still requires visual communication from the child to be effective. For populations that cannot effectively be tested by these eye charts, including non-verbal children, there is a need for a new type of vision exam. This technology, the "Handy Chart," uses a system of common hand gestures in different orientations that allow these populations to be visually screened. Of particular importance with children, these gestures are easy to mimic. The images are an open hand or "high five," a closed hand "O" shape, an open hand "C" shape, and a thumbs up hand formation. These gestures are also distinct enough from each other that a doctor can easily assess if the patient has correctly identified the shape. Even in the absence of any verbal communication, a doctor can quickly assess whether or not a patient understands how the exam works. The Handy Chart simplifies vision screening in young, non-verbal, or non-English speaking populations.
Developmental Stage
Chart has been clinically validated, copyrighted, and the product name has been trademarked.
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