All of this is to say that perhaps these glasses are actually tweaking something other than just central vision correction, by affecting the peripheral visual field and therefore engaging the right hemisphere.
It could be, but what is particularly interesting to me is that this thing works even with the eyes closed. Why would it work with the eyes closed, when you are not using your vision, neither central nor peripheral?
Maybe RH generally has a role to play in seeing with the eyes closed given its broader perceptual field? Just a curious thought.