A basic vision therapy tool no VT practice should be without. Better weight = Better swing!
Hard White Marsden Ball is 3″ hollow ball made of hard plastic with black letters on a 10’ cord.
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A basic vision therapy tool no VT practice should be without. Better weight = Better swing!
A basic vision therapy tool no VT practice should be without. Better weight = Better swing!
Hard White Marsden Ball is 3″ hollow ball made of hard plastic with black letters on a 10’ cord.
| Brands | Good Lite |
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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.
This card combines a lea symbols® line test on one side and lea numbers® line test on the opposite side. Proportionally-spaced lines from sizes 20/400 to 20/10 (6/120 to 6/3) equivalent.
16 inches, 40 cm testing distance.
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.
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