Just add the image and you will see the basic fixes tab on your left hand site (Blue rectangle), I just press Redeye button and Picasa software detects the red eyes pretty fast and remove them at once. Cool! It’s fast and fun to use it.
If you noticed there are any red eyes spots that Picasa may have missed. You can draw a square around the missed red eyes spot and it will repair it immediately. You can always press Cancel button to cancel the changes.