The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb.
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.
The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb.
AAA batteries are not included.
Brands | iAdvantec |
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This assessment is designed for amblyopia testing or screening. This near vision chart has 50% spaced rectangle (Massachusetts Visual Acuity Test format) with line sizes from 20/400 to 20/16 (6/120 to 6/4.8) equivalent.
16 inches, 40 cm testing distance.
Small Fixation Disparity Polarized Target Vectographic two-dimensional card with 2 Fixation Disparity Crosses positioned vertical to one another to facilitate the comparison of binocular performance when using a lower versus higher spatial frequency or acuity demand.
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.
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