To do almost any scientific work requires that telescopes track objects as they wheel across the visible sky.

They tracked objects against various backgrounds such as the earth and distant space.

It can track underwater objects, similarly to an air traffic control radar.

The external view was also able to track other objects in the centre of the view.

Infants need to control the heads to stabilize their gaze and to track moving objects.

Pattern recognition and computer vision can be used to track objects.

They can also track moving objects using large, rapid eye movements where the two eyes move independently.

It will also search for and track smaller objects that could represent a lesser but nevertheless significant danger.

In their good moments, these patients could track objects with their eyes.

The baby had not yet begun to track objects visually; when she tried, her eyes would roll back into her head.