The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb. Includes a pupil gauge (2 thru 9 mm) and cm ruler (to 5 cm).
AAA batteries are not included.
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The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb. Includes a pupil gauge (2 thru 9 mm) and cm ruler (to 5 cm).
The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb. Includes a pupil gauge (2 thru 9 mm) and cm ruler (to 5 cm).
AAA batteries are not included.
| Brands | iAdvantec |
|---|
This standardized vision test is designed for amblyopia screening and testing children who have difficulties when tested with the standard near vision card.
16 inches/40 centimeters 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).
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.
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