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CBSE Class 10 Answered

Cillary muscles
Asked by | 06 Jun, 2008, 08:08: PM
Expert Answer

The ciliary muscle affects zonular fibers in the eye (fibers that suspend the lens in position during accommodation), enabling changes in lens shape for light focusing. When the ciliary muscle contracts, it releases the tension on the lens caused by the zonular fibers (fibers that hold or flatten the lens). This release of tension of the zonular fibers causes the lens to become more spherical, adapting to short range focus.

The other way around, relaxation of the ciliary muscle causes the zonular fibers to become taut, flattening the lens, increasing long range focus.

Answered by | 09 Jun, 2008, 11:28: AM
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