How to make a UI element with refraction?

I’m trying to make a glassy/distortion element in my game’s UI, and the UI material domain seems to have refraction disabled as an option. Is there another way in the engine to do this? I’ve considered just making flat geometry sitting in front of the camera, but I’m not entirely sure how I would be able to make that adapt to various FOV and aspect ratio settings.

Hey friend. There is a method here, but if you want the background to refract, this may not be for you.