Question

when the ciliary muscles relax, the thickness of the lens:
a) reduces
b) increases
c) remains same
d) sometimes reduces​

Answer 1

Answer:

When the ciliary muscle is relaxed, the choroid acts like a spring pulling on the lens via the zonule fibers causing the lens to become flat. When the ciliary muscle contracts, it stretches the choroid, releasing the tension on the lens and the lens becomes thicker.

Answer 2

Answer:

A) REDUCES

As the muscles relax it releases tension. Thus flattening the lens