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Ophthalmic instruments designed to assess the ability of a patient\'s vision systems to coordinate with their hands when performing a given task. These instruments also help train the patient to control and guide their hands. Included among the variety of instruments used to assess or train vision systems are maze tests, during which the users try to trace a line through a maze without deviating from the borders (usually an audio signal indicates a mistake); mirror tests that provide a simple shape that should be traced on a piece of paper using only a mirror reflection of it as a reference; and pursuit rotor tests. Pursuit rotor tests consist of a circular metal plate marked with a spot near the edge of the plate that is powered by a motor that can speed up or slow down, and a sensor in the turntable. The sensor records the amount of time the users maintain contact and compares that with the amount of time they lose track of the spot in a given period. Eye-hand coordination instruments are intended to evaluate and improve the capabilities of children with strabismus and/or other people who require well-coordinated capabilities for working or to perform other special tasks.
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