Final Image Preview

Magnifying Glass Image can be found here
Text Background image can be found here
Step 1
Go to File > New (set the settings to match the picture below)

Step 2
Add your image or text you want to apply the Magnifying Glass Effect to.
Step 3
Go to Layer > New > Layer

Click ok

Step 4
Select the elliptical marquee tool and draw a circle on your image or text where you want your Magnifying Glass Effect.


Now colour the circle in black.

Step 5
On the layer your created right click on it and go to blending options

Set the setting to match the below pictures

Inner Shadow

Outer Glow

Bevel and Emboss

Stroke

Step 7
The circle you created in step should still be selected.
Now click on your image or text layer and go to Filter > Distort > Spherize

Set the Amount to 75%

Then you could add a Magnifying Glass frame around the Circle.
Final Image

