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ETDRS Tumbling E Chart - Far Vision

ETDRS for FAR Vision,  3 meters
      Tumbling E
Designed and calibrated for V.A. at 3m.    Also printed V.A. decimal at 1m equivalent.  
ETDRS: - 0.1 logaritmical progression.
            - 5 symbols per line. 
            - 15 lines.
            - V.A. printed in: Decimal, logMAR & Snellen (3/...)
            -  High qualitiy Pvc . Thickness: 0.7cm. Dims: 60x50 cm.

V.A. at 3mt: from 0.1 dec (logMAR 1.0, Snellen 3/30) to 2.50 dec (-0.4, 3/1.2)
V.A. at 1mt: only dec printed: from 0.05 to 0.83.

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