Question

Dilation of ciliary muscles results in

• A. contraction of suspensory ligaments
• B. relaxation of suspensory ligaments
• C. focussing of lens on faraway objects
• D. Both a and c

Answer 1

The correct option is D Both a and c

The ciliary muscle is a circular band of smooth muscle. The contraction or relaxation of the ciliary muscles changes the tightness of the zonular fibres. It alters the shape of the lens, adapting it for near or far vision.
Ciliary muscle contraction causes relaxation of suspensory ligaments, which helps in viewing the nearby objects.
Ciliary muscle dilation causes the contraction of suspensory ligaments, which helps viewing the faraway objects.