Focus
Jump to navigation
Jump to search
Focus is how an optical gadget or human eye brings together light at a single point or location.
The human eye focuses using zonules and ciliary muscles.
In the human eye, focus is done using accommodation of the eye. When the eye is focused far away, the eye's ciliary muscles are relaxed.
An eye accommodates to see things close up, where the incoming rays are not parallel. When it does this, the lens thickens in depth and increases its curvature by being pulled by the zonules.
Accommodation has a latency of about 350 to 400 milliseconds (.35 to .4 seconds) after an initial visual stimulus.[1]