Linear-spaced lines line sizes range from 20/100 to 20/16. Lines are labeled with 20 ft notations only.
Chart size is 45.5 cm x 30.5cm
20 feet, 6 meters testing distance.
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Linear-spaced lines line sizes range from 20/100 to 20/16. Lines are labeled with 20 ft notations only.
Chart size is 45.5 cm x 30.5cm
20 feet, 6 meters testing distance.
Linear-spaced lines line sizes range from 20/100 to 20/16. Lines are labeled with 20 ft notations only.
Chart size is 45.5 cm x 30.5cm
20 feet, 6 meters testing distance.
| Brands | iAdvantec |
|---|
| Chart size | 9 in x 14 in (22.9 cm x 35.6 cm) |
| testing distance. | 20 feet, 6 meters |
| optotypes | Letters |
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.
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).
Some children with brain damage-related vision loss may achieve near normal results in routine vision tests (large visual field and normal or near normal visual acuity), but cannot interpret facial expressions or recognize people’s faces.

Stereoacuity depth preception test designed to rapidly test for amblyopia and strabismus in early and non-readers and non-verbal children and adults.
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