Visual Acuity Test is the test of ability to see and shows that how well someone sees, and is measured according to the size of letters or symbols on specific charts. Some of the charts used for visual acuity test are Tumbling E, Ladult Ring (C), and Snellen Letters charts.
A digital Visual Acuity System is a digital system with a display or a projector that displays acuity test charts. The advantage of digital chart is that it’s not limited to only one chart, and can display multiple charts with various parameters such as size, distance, color, contrast, and brightness.