Your eyes function a lot like a camera does, adjusting in order to view the world up close and far away.
你的眼睛的功能很像相机，调整 以观察近处和远处的世界。
英语百科
Order to View
Order to View was an early television series which aired on the BBC for four episodes (two in 1938, two in 1939). A live variety show, those who appeared included Billy Milton, Edward Cooper, Sepha Treble, Ena Moon, Warren Jenkins, and Nadine March. It was written by Michael Treford. The time-slots it aired in ranged from 30 minutes to 45 minutes.