LEA GRATINGS® are for preferential looking test situations with infants or children and adults with disabilities to determine detection acuity. Grating levels printed on each handle are: 0.25, 0.5, 1.0, 2.0, 4.0 and 8.0 cpcm (cycles per centimeter of surface). Includes instructions, a storage case, and 4 paddles.
Dimensions: Width: 7.75" x 12.5" (19.685 cm x 31.75 cm).
Note: All products sold on Accuspire.com should be used by qualified clinician and should be purchased by or on order of a qualified clinician.
These discs measure contrast sensitivity curve based on 4 gratings at 2 contrast levels: 10% and 2.5% contrast. These 2 levels use 2 grating frequencies: the 10% level uses 0.5 cpcm and 8 cpcm while...
This card combines a LEA SYMBOLS® line test on one side and a LEA NUMBERS® line test on the opposite side. Features proportionally-spaced lines from sizes 20/400 to 20/10 (6/120 to 6/3)...
The NECO(New England College of Optometry) Near Visual Acuity Card has LEA NUMBERS® with line sizes of 20/400 to 20/10 distance equivalent on one side. The other side features LEA...
This educational toy is a modified version of the Effron rectangles and is used to assess size perception. The LEA RECTANGLES GAME® contains two groups of rectangles. A child with normal...
This game is used to assess the visual perception of line orientation. Tests two components: Information for the hand movements in the parietal lobe and Picture perception in the inferior...
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