This test assesses the reversals of letters, numbers and words in children between 5-12.
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This test assesses the reversals of letters, numbers and words in children between 5-12.
This test assesses the reversals of letters, numbers and words in children between 5-12.
| Brands | Bernell USA |
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Test for quick measurement of low Contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% Contrast by measuring the distance where the symbols are seen. 10M symbols correspond to visual acuity 0.10 at 1 m, 0.05 at 0.5 m and 0.3 at 3 m. VA values are thus easy to calculate. Test includes a table for conversion to Snellen equivalent VA values, a response keys and instructions. 6 pages, 3.25″ x 9″ (8.25 cm x 22.9 cm).
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.
Hiding Heidi Low Contrast Face Test are available in 2 different versions:
Double Sided : Four cards printed on both sides in the following Contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%.
Single Sided : Seven cards printed on one side in the following Contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%.
Cards are 9″ x 9″ (23 cm x 23 cm). Includes instructions.
Standardized adult Sloan Letter near vision card with proportionally spaced (logMAR) lines in ETDRS, format; line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent.
16 inch, 40 cm testing distance.
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