>>Gratings Acuity Cards

Gratings Acuity Cards

From £380.00

Preferential looking test, available as an infant, child or combined test set.

Description

The Gratings Acuity cards form a Teller-type gratings preferential looking test which provides a visual acuity assessment from as young as six weeks.  It comprises 17 Log-scaled acuity cards plus one blank card, each with a central peep hole for observing the eye movements.

The Gratings Acuity Cards provide a rapid method of determining the visual acuity of infants and young children and can also be used to test stroke victims. The test cards can be purchased in three options:-
Infant Grating Test (7 test cards plus blank)
Child Grating Test (10 test cards)
Combined Grating Test (all 17 test cards plus blank)

Additional information

Dimensions 58 × 26.5 cm

Card Resolution & Acuity Equivalents

Acuity Card No Cycles per cm Cycles per degree at 38cm Approx. Snellen equivalents
1 49.2 35.4 6/5        20/17
2 35.4 25.5 6/7        20/25
3 30 21.6 6/9        20/30
4 20.1 14.5 6/12      20/40
5 17.3 12.5 6/14      20/50
6 13.3 9.6 6/18      20/60
7 10.7 7.7 6/24      20/80
8 9 6.5 6/30      20/90
9 5.3 3.8 6/50      20/160
10 4 2.9 6/60      20/200
11 2.9 2.1 6/90      20/300
12 2 1.4 6/130    20/400
13 1.33 0.96 6/190    20/600
14 1 0.72 6/250    20/800
15 0.5 0.36 6/500    20/1700
16 0.4 0.29 6/620     20/2100
17 0.25 0.18 6/1000  20/3400
18 blank

Availability

If the item shows as currently out of stock, please contact us via email contact@kaypictures.co.uk or telephone +44 (0)1442 823507 to enquire this product’s availability.

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