Create a new layer and position it as the top layer. Rename this layer to “Excimer laser”.

Use the polygon lasso tool to create a selection shape like the image below. Start the selection on the center of the pupil.

Fill the selected area with red then press Ctrl+D or choose Select > Deselect to deselect.

Add a layer mask to the “Excimer laser” layer. To do this, choose Layer > Layer Mask > Reveal All.

Select the layer mask of the “Excimer laser” layer. Then select the Gradient tool. Using the default Black to White Linear Gradient, draw a gradient from the tip of the laser where the pupil is to the end. You should get a fading effect like the image below.

Make sure that you still have the layer mask of the “Excimer laser” layer selected. Open the levels tool (Ctrl+L or Image > Adjustments > Levels). Move the middle input slider towards the right until the laser fades away from the eye like the image below.

Finally, set the opacity of the “Eximer laser” layer to 75%.

Complete the ad by adding some text. You now have a nice ad but keep in mind that you shouldn’t use this ad for real-world projects.
