ETDRS Low Contrast LEA NUMBERS^® Clinical Trial Charts

ETDRS low contrast LEA NUMBERS® vision charts with proportionally spaced (geometric progression) lines. Features translucent low contrast letters with line sizes ranging from 13/131 to 13/5.2 (4/40 to 4/1.6) equivalent. The other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR. Available in 2 contrast levels: 2.5% and 10%.

Dimensions: Height 24.5" x Width 25.5" (62 cm x 65 cm).

Testing distance: 13 feet/4 meters.

Note: These charts can only be used with our ESV3000 or ESC2000 illuminated ETDRS cabinets.

LEA SYMBOLS^®: The Gold Standard