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.
No products in the cart.
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 |
|---|
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 double-sided near vision card combines proportionally-spaced lines on one and 50% spaced rectangle (Massachusetts Visual Acuity Test Format) on the other. Attached 16-inch (40 cm) measuring cord ensures proper screening distance. Includes flash cards and instructions.8 in x 10 in (20.3 cm x 25.4 cm).
16-inch, 40 cm testing distance.
Sloan Letter charts calibrated to test visual acuity at an intermediate distance of 66 cm (26 in.).
This chart can either be wall mounted or used in an ESV 1200 , ESV 1500 , or a Model A illuminated cabinet.
WhatsApp us

