While doing the exercise just a few minutes ago, I noticed that there are a few things that help make the exercise effective.
- I fix with the normal eye as always, but then I pay special attention to the lazy-eye image.
- I try to make the scene as bright as possible.
- I pay attention to the way the muscles in the lazy eye feel and then I pay attention to the way that the feeling of the muscles relates to the movements of the lazy-eye image. I put as much focus as possible on that relationship.
By doing these things, particularly number 3, I've found that I can substantially cut down on the amount of defusing that's normally seen with this exercise.