That's complex! :)

I just set a scene up in Poser Pro 2014, a square prop with a tiled texture, a stick man and a hi-res ball prop scaled to 25% on the y-scale to approximate a magnifying glass shape.

In the material room, I selected the ball prop and just clicked the 'add refraction' wacro.

This is the render from the front camera showing the magnifying effect.