I use coloured photographs on the iPad for training fusion as a way to engage the patient more on an emotional level. When they perceive depth, I invite them to talk about the places in their life where they wish to have more depth and fulfilment. I first published the photos in my book Conscious Seeing The photographs I use on the iPad can be purchased alone.
The design varies on whether the patient is Myopic, Hyperopic or astigmatic. The iPad is mounted on stand for ease of use. Note that the patient is using a loose prism to increase the demand.