Friday, February 19, 2010
Eyesight How the Eye Works
The eyes function works by a light from an object striking the cornea through the pupils which cuts down the light, a crystalline lens that sits inside the eye, produces fine focusing, which produces a clear image that is sent directly to the back of the retina as an object, and gets translated and relayed to the brain by electrical impulses. Concentrating for long periods may appear to make the eyes feel strained, but this is caused by the muscles on the eyelids being in a fixed position, which stops the eyes from movement, and the eyelids from blinking. Every 2-4 seconds the eyelids blink, but when driving or reading this number is reduced to every 10-12 seconds. The eyesight vision is a special gift and should be looked after.
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