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Hiding Heidi Low Contrast Face Test: Optometry, US $39.00 – Picture 0
Hiding Heidi Low Contrast Face Test: Optometry, US $39.00 – Picture 0

Hiding Heidi Low Contrast Face Test: Optometry

US $39.00

  • Staten Island, New York, United States
  • Mar 5th
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Hiding Heidi Low Contrast Face Test Visual communication is the most important communication method during the first year of life. The ability to detect objects of low contrast is an important component of the visual system. For example, facial expressions are mediated by faint shadows and changes in the contours of the mouth and eyes. Determining the levels of contrast that an infant can detect helps provide baseline data for evaluating future changes. For example, deviations from usual behavior may indicate disorders that leave vision at high-contrast levels unaffected. Hiding Heidi Low Contrast Face Test are available in 2 different versions: Double Sided: Four cards printed on both sides in the following contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%. Product Number 253500
Condition New other (see details) :
A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with defects. See the seller’s listing for full details and description of any imperfections.
Seller Notes “New in packaging”

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