4 ms·
Two eyes are necessary for stereoscopic depth perception, but perception of depth can be had with a single eye adjusting its focal length, using context clues,
by LarryMullins 4y ago
Two eyes are necessary for stereoscopic depth perception, but perception of depth can be had with a single eye adjusting its focal length, using context clues, or moving your head around to acquire depth information from motion parallax.
- dekhn 4y agoas an example of a context clue, when driving you tend to use the size of a car as a proxy for its distance, instead of stereo vision depth perception. It's fairly common for people to lose acuity in one eye but can still drive for this reason.