The Power of Gray - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 150

Figure 2.77
5. Cancel the selection by going to Select > Deselect. Add a white layer mask to the
eye detail layer by clicking the layer mask icon at the bottom of the Layers panel.
6. With a normal medium soft-edged brush and a black foreground color, making
sure the layer mask is active ( Figure 2.78 ), paint on top of the image to remove
areas of the circle that are outside the iris ( Figure 2.79 ) . Also paint in black to re-
veal the pupil and around the outside of the circle to soften and blend in.