Human Brain Model
Comes with a Stand and rod to display.
Half-removable brain model.
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Human Brain Model
Comes with a Stand and rod to display.
Half-removable brain model.
Human Brain Model
Comes with a Stand and rod to display.
Half-removable brain model.
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.
Combines Maddox Rod, Occluder, Red Lens, Fixation Targets, 1mm and 1.3mm Multiple Pinholes. Also includes Fixation targets, including one letter and one symbol .6mm, .8mm, 1.0mm, 1.6mm plus 2.0mm and 2.5mm letters.
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