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Step 11 – Apply the layer styles for the LASIK flap
Right click on the “LASIK flap” layer and choose Blending Options.
- Enable the Bevel and Emboss style.
- Increase the Structure> Size setting so that the bevel creates a rounded tip in the center. The center tip should not be flat.
- Lighten the shadow by reducing the Shading > Shadow Opacity setting.
- Finally, adjust the Shading > Angle setting. Click on the crosshair and position it so that you get a gradient effect on the LASIK flap like the image below.
- Enable the Stroke setting.
- Set the Fill Type to gradient. Adjust the Structure > Size setting so that you get a thin outline.
- Set the Structure > Position setting to inside.
- Reduce the Structure > Opacity setting to 50%.
- Click OK to apply the layer styles.
Step 12 – Connect the LASIK flap to the LASIK flap cutout
Use the polygon lasso tool to create a selection like shown in the image below. The selection edge should meet at the two corners where the LASIK flap and the LASIK flap cutout meets.
Select the “LASIK flap cutout layer” then click on the 
button in the Layers palette to add a layer mask. Your LASIK flap should look like the image below.
Hold the Ctrl key and click on the “LASIK flap cutout” layer mask thumbnail . This will create a selection from the transparency of the “LASIK flap cutout” layer. Press Ctrl+I or choose Select > Inverse to inverse the selection. You should have a selection like the image below.
Select the “LASIK flap” layer then click on the button to add a layer mask. Your LASIK flap should look like the image below.
Step 13 – Create the LASIK flap hinge
Currently, the hinge on the LASIK flap looks too sharp as if it was folded like origami paper. We’ll smooth it out to create a more realistic LASIK flap hinge with more curvature. Select the layer mask of the “LASIK flap” layer. Make sure that you select the layer mask and not the layer itself. Chooes to Filter > Blur > Gaussian Blur. Adjust the Radius setting so that you get a thick translucent white line on the LASIK flap like the image below.
Now choose the layer mask of the “LASIK flap cutout” layer. Again, make sure that you’re selecting the layer mask and not the layer itself. We’ll use the same filter so go to Filter > Blur > Gaussian Blur. Pick a Radius setting that will just slightly blur the edge of the LASIK flap cutout.
Here’s the completed LASIK flap.
