Card(Intermediate): Sloan Letter Intermediate with Cord (27.5"/70cm)

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Standardized adult Sloan Letter near vision card with proportionally spaced (logMAR) lines in ETDRS, format; line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent. Attach ed 70 cm measuring cord ensures proper screening distance. Printed on two sides. 15" x 10.5" (17.8 cm x 22.9 cm). 70 cm testing distance. Show more