Some research into how the concept of a triangular descending series of characters or pictograms have been used in terms of design.
Charts usually display several rows of optotypes (test symbols), each row in a different size. The person is asked to identify the numbers or letters on the chart, usually starting with large rows and continuing to smaller rows until the optotypes cannot be reliably identified anymore.
Charts usually display several rows of optotypes (test symbols), each row in a different size. The person is asked to identify the numbers or letters on the chart, usually starting with large rows and continuing to smaller rows until the optotypes cannot be reliably identified anymore.
