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Original Series ETDRS Distance Chart for 6.5ft/2m testing distance. Optotypes are proportionally spaced (logMAR) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent, 0.10 to 2.00. Revised version of the original ETDRS series based on more recent research. Chart measures 24.5" x 25.5" (62 cm x 65 cm)
Charts available are ETDRS Chart R, Chart 1, and Chart 2. All charts are screen printed on styrene plastic and clear coated for long lasting durability.
6.5 feet, 2 meter testing distance
Medex SKU: GL-500040