A LEA SYMBOLS® distance visual acuity chart for an ETDRS Illuminator Cabinet.
Features proportionally spaced (logMAR); line sizes range from 20/200 to 20/8 (6/60 to 6/2.4) equivalent, 0.10 to 2.50. A response key and instructions are included.
Dimensions: 24.5" x 25.5" (62 cm x 65 cm).
Testing distance: 10 feet/3 meters.
