Just to clarify, my son sees perfectly-having perfect vision-no actual sight problems. He is gifted in the VCI and reads at 10th grade level even though he just finished 4th grade, however, he had tracking problems/lazy eye (corrected by surgery) which caused him to use both hands. I was told by the vision therapist that tons of kids with tracking issues (can't be seen on regular eye doctor visits) use both hands. It was just a thought. Good luck to you!