Choose between normal mode and continuous scan mode to get the speed and distances of objects in the distance. (geekwrapped.com)
Some newborns will gaze towards objects in the distance, but many will be looking closely for eye contact. (nantolbert.org)
Certain blind individuals have the ability to use echoes from tongue or finger clicks to recognize objects in the distance, and some use echolocation as a replacement for vision. (sciencedaily.com)