The following requirement must be fulfilled:
The desired photo is opened for editing in the Editing Photos screen. 
To remove red eyes from a photo, proceed as follows:  
1.
Click the Modify button on the lower task bar.
à
The Modify window is opened with the Enhance tab displayed.
2.
Click the Red Eye Removal button.
à
The red eyes are removed automatically. In addition, the Red Eye Removal window is opened. The mouse pointer is changed into a cross.
3.
If you are not totally satisfied with the auto improvement:
1.
Press the left mouse button and keep it pressed to define the size and position of the rectangle around the affected area of the photo.
2.
Release the mouse button to apply the effect.
à
The red eyes are removed automatically.
à
All changes are automatically saved to the photo.
è
You have removed red eyes from a photo.
See also
General Editing of Photos

Removing Red Eyes