My son has had vision therapy before 2 years ago for 4 months 2 times a week.his drctor wanted to give him a break.He also has Tourettes and needed this break.He went back last year and he tested about the same as where he was when we stopped therapy and we were just doing exercises at home every other day he loves doing these one on one time with mommy .Well today when he had a appointment that lasted 90 mins with his eye doctor he tested with less skills like in depth perception and rotation skills.His tics are not a problem now mediciine has helped a great deal.The doctor is mainly retired now and will see him once a month no other one close that does this.He gave me more exercises to do and some for his teacher to try to if she will.He also contact the county schools OT annd see what is up with his evaluation she started 2 months ago and hasent finished.He said he set back in these skills could be causing a lot of his writing and reading problems but mainly he said really it is hard to tell what is being sent to his brain and why things somtimes get messed up.