When one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.
True
Yes, when one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.
The reason is, as we look at the objects that are nearby, the eye lens will be strained, because more bending of light will occur to form the image at the retina. For this to happen, the ciliary muscles have to be contracted to reduce the focal length.