Canon MultiPASS F20 Software User's Manual page 114

In the Redeye Reduction dialog box, the original image appears on
the left. As you modify the image, you can see the results on the right.
2. Click Zoom In to zoom in on the eyes.
3. After zooming, if the eyes do not appear in the After box, click Scroll.
On the image in the After box, use the mouse pointer to circle the
eyes.
4. Click Select. On the image in the After box, drag the mouse pointer to
outline the eyes.
5. Click the appropriate eye color.
6. Move the slider to the right to increase the colored area, to the left to
decrease. Or, specify a value in the Amount box.
When you use the redeye reduction feature, you reduce the redness of the
eyes that appears on some images.
Chapter 5 Viewing and Enhancing Images 110