1 symbol på hver side
Passer fra 19 - 36 mnd
Avstand; 3 meter
30 kort ( fra 10 x 12,7 cm til 12,7 x 12,7 cm)
This set of flash cards was designed for testing distance visual acuity
in children and adults who have difficulty with visual acuity charts,
the Crowded Symbol Book Test, or the Single Symbol Book Test. Line sizes
from 20/200 to 20/8 (6/60 to 6/2.4) equivalent, 0.10 to 2.50. Includes
response key, training cards, and instructions. 30 cards per set, 4" x
5" (10 cm x 12.7 cm) to 5" x 5" (12.7 cm x 12.7 cm).