Pete,
Here's what I could do. A quick & dirty method as we say, meaning a fast and not so optimal edit.
First I promoted the Background layer to a real layer (in Layer Palette double click on it). I needed to do this so I would be able to put a layer underneath.
Then I made a selection of your right eye with the Polygonal Lasso, set at 2 px feathering.
Next I hit Del to remove your right eye (sorry about that)
Then I made a rough selection of your left eye (The one I think looks best) and made a copy of that on a new layer (Ctrl-C, Ctrl-V)
I mirrored this copy, and then I mirrored the iris back so the catchlight would be right.
Some white was missing, so I copied some over from the left eye.
The corners of the repaired eye were now too white, so I clone-stamped in some pink. As a source I used a rather pink section of the skin.
Then I couldn't resist to correct the red eye effect coused by the flash. Selected the red irises, desaturated them, and using steep Curves clipped them to black and the catchlights to white.
Thats it!
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http://www.pixentral.com/show.php?picture=1oGn6I8rxv8XA0zABn m0Gc3AO2kv5I>
Rob