Win Winger said that sightreading music could have the same effect, but combining the left brain analysis with the right brain attention to the feeling and nuance in the music.

NLP says eyemovements indicate the way the mindis processing the information. I guess if one eye is JUST doing the work of one hemisphere, then eye patching makes sense. if the corpus callosum is more able, then the perhaps the mind would be stronger against the limbic systems heavy emotions?

A teacher I know suggests writing with the left hand to 'increase the flexibility of the nervous system'. I reckon the secret there is the relaxed playful approach to doing something new and different, just for it's own sake. Could this be the same with eye patching. Sounds like a fun experiment.