ETDRS original series 4 m – SLOAN letters, chart "R" - HVZDS

ETDRS original series 4 m – SLOAN letters, chart "R"

Translucent LogMAR standard-chart for 4 m distance.

VA: from 0.10 to 2.00,

Format: 62 cm x 65 cm

Good-Lite: 500013

ETDRS eye chart - Original series chart R with proportionally spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Standardized format used in National Eye Institute clinical studies and in low vision evaluations that require accurate and repeatable visual acuity measurements. Chart measures 24.5" x 25.5" (62 cm x 65 cm)

13 feet, 4 meter testing distance