Last week in Vision Therapy they had me look into the Stereoscope machine at a piece of paper with two circles on either side. One side had an object in the circle and the other was just a circle with nothing in it.
The therapist asked me to trace the object.
At first I did not really understand. So I said, "I don't see anything on this side that I am supposed to trace." They tried having me tap the area with my pencil, (tapping the area where you are supposed to see something will often make it magically appear...I have no idea why, but it does work!) but even tapping failed to make the image appear.
After a few attempts at having me trace over pictures I could not see, the therapist loaded this last sheet into the machine. In the middle was a simple drawing of a tea cup, which he asked me to trace. I did not see a teacup in the circle, only a teacup to the left. So I decided to try just copying the teacup, but as I put the pencil on the blank area the teacup suddenly appeared. I screamed, "I SEE THE TEACUP!" I didn't want to lift my pencil for fear the image would go away, so I traced it, and this is what I came up with (see the faint tracing of the teacup to the right in photo above). The tiny writing to the right of the test is where the therapist wrote that I did it successfully!
Being able to see the teacup in the area that was blank and then trace over it is a very good thing. Technically, I believe it means I fused the image of the teacup onto the image of the circle, rather than seeing just the circle and the teacup separately. YAHOO!