An Eye for an Eye
Again with the Ellipse Tool and Shift, create another circle. This will be our pupil.
In my case the blending options from the iris were still present, just left click a layer and select ‘Clear Layer Style’ to send it on its way. Fill it with black.
I added a touch of an Inner Shadow as well.
Now to add in some shiny reflection. Grab a soft brush and draw in some white glow.
Add a blur to this layer to dissipate it slightly, and there you have your completed eye!
Here are a few more variations on this technique. Don’t be afraid to share any you have made using this tutorial! You may see it on the site in the future. 
Here is a pack of free Web 2.0 Calendar Icons for you to use. They've een designed using the method outlined in the 
I've collected a list of over 1500+ FREE icons, useful for anything from graphic to web to interface design!
Create spiffy-looking complex geometric shapes. The final effect looks pretty cool, and they are dead easy and fun to make!
Have you wondered how to get a photograph to have such nice, rounded edges? Using masks, there's an easy way to do that!
Why on earth did you by that ring?!
Was that a sharingan on the front page?
Yes indeedy!