How does the Lens of An Eye Focus?

Answer

The lens of they focus using muscles behind the eye. For near objects the ciliary muscles will contract using zonular fibers to relax which causes the lens to become rounder which shortens the focal length allowing the objects to be seen up close.
1 Additional Answer
A lens of an eye will focus by the distance that you're looking, causing the actual lens of the eye to change shape. This changing of the lens based upon the light of the area you're viewing, adjusts the retina to give you a better image.
Q&A Related to "How does the Lens of An Eye Focus?"
1. Hold the eyelids open with a speculum (a type of medical clamp) 2. Place a suction ring around the cornea. 3. Place a cutting blade called a microkeratome above the cornea and
http://www.ehow.com/how_7655246_focus-eye-changing...
The eye changes area of focus by adjusting the distance between the retina and the lense.
http://wiki.answers.com/Q/How_does_the_lens_of_an_...
Actually signals from the eye cortex is sent to the brain to tell your eyes to focus on something. Light goes through the retina to the optic nerves that's why light hurts our eyes
http://answers.ask.com/Health/Other/how_does_the_e...
The ciliary body contains the muscular
http://www.chacha.com/question/what-is-the-lens-in...
Explore this Topic
The lens of the eye is able to focus from light passing through the lens to the retina. The retina sends signals to the brain. The brain interprets the signals ...
Focusing the eye by changing the shape of the lens is called accomodation. Contraction of the ciliary muscles permits the lens to round up on its own accord; the ...
The human's eye has several parts. It is able to focus by light first entering the cornea then on to the pupil on to the lens and stops at the retina. Once light ...
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