The interactive eye is a wonderfully versatile teaching resource that gives you full control over the diagram.

You have full control over the image...colour it in and add or remove labels and arrows at the touch of a button. Individual labels and arrows can be toggled on or off simply by clicking on them (in this way the diagram can be simplified to suit any age group). Create a labelling quiz for the whole class. Only colour in the parts you are talking about to help the pupils focus. An outstanding teaching tool. Requires Macromedia Flash.