Dimensions: 3.75″ x 6.25″ (9.5 cm x 15.9 cm).
Testing distance: 16″/40c
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A French Sloan Letter Pocket Card with line sizes of 20/400 to 20/10 equivalent on one side. The continuous French text is printed on the reverse side with line sizes from 20/80 to 20/16.
Dimensions: 3.75″ x 6.25″ (9.5 cm x 15.9 cm).
Testing distance: 16″/40c
| Brands | Good Lite |
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The Teller Acuity Cards is a test of grating acuity for infants, young children and individuals with disabilities utilizing a preferential looking technique. This test has an extensive evidence base in normative and clinical studies that provide a strong foundation for applications in ophthalmology, optometry, and developmental practice. The test is cited more often than any similar product in the health information compiled by The National Library of Medicine.
The LEA 3-D Puzzle is designed for supporting the development of the concept of “same”, first with colors, then with black & white concrete forms that are prerequisites for the measurement of recognition acuity with the LEA SYMBOLS® tests at an early age.
Large Fixation Disparity Polarized Target vectographic two-dimensional card comes with 2 Fixation Disparity Crosses positioned vertical from one another introducing a new Fixation Disparity Cross design (bottom cross at 20/100 acuity level).
Small Fixation Disparity Polarized Target Vectographic two-dimensional card with 2 Fixation Disparity Crosses positioned vertical to one another to facilitate the comparison of binocular performance when using a lower versus higher spatial frequency or acuity demand.
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