LEA NUMBERS® Proportional Spaced Distance Chart
These adult LEA NUMBERS® optotypes with proportionally spaced (logMAR) lines; line sizes range from 20/160 to 20/8 (6/48 to 6/2.4) equivalent, 0.12 to 2.50. This chart is designed for the ESV1018 Professional Visual Acuity Cabinet. The cabinet illuminates the chart giving it the best possible quality when administering a test.
10 feet, 3 meter testing distance