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The purpose of the Number Rods is to visualize the quantities 1-10: to learn to count and to associate the names with the quantities. There are ten rods varying in length from 10 centimeters to 1 meter. Each rod is divided into sections equal to the shortest rod.
Loss Rod Cells can result in the condition known as Night Blindness. <b>Rods r</b><b>espond to very low levels of light and are primarily responsible for night vision.</b><br /> They also: <br /> A Rod Cell is a type of light-sensitive nerve cell found in the retina. Rod cells do not process fine details or colour differences but are highly sensitive to light. A single photon of light is all that is require to produce a response from a Rod Cell. Loss Rod Cells can result in the condition known as Night Blindness.