What change is made in the eye to enable it to focus on objects situated at different distances? Ilustrate your answer with the help of diagrams.
What change is made in the eye to enable it to focus on objects situated at different distances? Ilustrate your answer with the help of diagrams.

The ciliary muscles of the eye must either be totally relaxed or stretched in order for an eye to concentrate on things at varying distances. The ciliary muscle contracts, causing the suspensory ligaments to loosen, allowing the surrounding objects to be focused.