Thanks Alex,
I have read the pages that u've posted. I have visited the vision3d.com and I can successfuly read the hidden pattern after many trials. OK..Then, I open my book..and i try to tune my eyes to parallel focus. I see the "blip page" but the words are blur.
Would u like to tell me that how the words look like when i am in the correct photofocus state. It really confuses me. Sometime i think i am in "cross viewing" but not in parrallel viewing.
Thanks a lot!
Fung.
