Sloan Letters Insta-Line Chart
Sloan Letters Insta-Line chart with linear-spaced optotypes in the following size equivalents: 20/50, 20/40, 20/30 and 20/20. Two lines of each size with 3 optotypes on each line. Chart size is 9" x 14" (22.9 cm x 35.6 cm).
Chart with Overlay includes RDC overlay and the chart.