Teller Acuity Cards® II, 16 plates (full set)

For vision testing in non-verbal children and infants or persons with impaired vision and perceptual disorders.

The test is based on the preferential looking principle.

Contains 16 plates of graded gratings: 20/30, 20/40, 20/60, 20/80, 20/100, 20/150, 20/200, 20/300, 20/400, 20/600, 20/800, 20/1200, 20/1600, 20/2400, 20/3200.

Equivalent to VA decimal: 0.66, 0.50, 0.33, 0.25, 0.20, 0.13, 0.10, 0.060, 0.050, 0.030, 0.025, 0.016, 0.0125, 0.0083, 0.00625.

Size: 56 cm (width) x 25 cm (height)

Test distance 1 m / 50 cm

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Legal comment:

Teller Acuity Cards(R) is a U.S.A. registered trade-mark of the University of Washington and is used under the licence of Precision Vision, Inc., Woodstock, Il. USA.