Dear Jed,
Eyes tend to defocus when looking without 'I'? Of course. I've noticed it all along! I was trying so hard to find an answer to your question, THE experience you are looking for that I overlooked what I had been experiencing already.
Maybe that's the case for this pursuit of T/S or H/A as well? Maybe I have what I am pursuing but I have been oblivious of it.
Smiling