11. The diagram shows a section through a human eye.
Which structure contains the muscles which contract to produce a focused image on the
retina?
![11 The diagram shows a section through a human eye Which structure contains the muscles which contract to produce a focused image on the retina class=](https://us-static.z-dn.net/files/d51/4ea528936f2a21a7ae726d7d3ac5a1c0.png)