This is one of over 4594 effects generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
To open this filter, you must have Filter Forge 1.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
This filter adds block based refraction to your photo and if you so choose a tunnel offset with the ability to shift the offset courtesy of reposition rays snippet
block perspective refraction
This filter has earned its author one of our rewards. They are given to the authors of popular filters and include a free copy of Filter Forge.