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%.

Single Sided: Seven cards printed on one side in the following contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%.

Cards are 9" x 9" (23 cm x 23 cm). Includes instructions.

Please read before purchase. The information provided regarding dietary supplements or ointments are not to be taken as medical advice.

Consult a healthcare professional prior to use if you are pregnant, nursing, taking medication, or have a medical condition.

Keep out of reach of children. Store in a cool, dry place. Do not use if seal under cap is broken or missing.

Order by 2PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on time.

There is €4.99 charge for delivery under €50 Orders. Additional charges will be imposed by our couriers for delivery to remote area, a surcharge may be levied to cover carriage to these areas.

Please note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery.