That's right. The iris and pupil control the amount of light coming into the eye, but do not play a major part in focusing it. This is done by the cornea and by the lens, which is adjusted by muscles in the ciliary body.

Partly right. The iris and pupil control the amount of light coming into the eye, but do not play a major part in focusing it. This is done by the cornea and by the lens, which is adjusted by muscles in the ciliary body.

No. The iris and pupil control the amount of light coming into the eye, but do not play a major part in focusing it. This is done by the cornea and by the lens, which is adjusted by muscles in the ciliary body.