Good-Lite ETDRS Low Contrast LEA NUMBERS Charts
ETDRS Low Contrast LEA NUMBERS Charts
ETDRS low contrast LEA NUMBERS vision chart with proportionally spaced (geometric progression) lines translucent low contrast letter chart with line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Available in 2 contrast levels: 2.5% and 10%. Chart size is 24.5" x 25.5" (62 cm x 65 cm).