I am a certified parent educator and former teacher---w/ special ed , too.
You are your child's advocate. You are going to be his voice when he is young.
I have a child w/ a 504, too. I tell the teachers to be discreet as possible.
You have more say of there is a 504.
Is there a dr that does vision therapy near you? My daughter has 20/20 sight...her vision (which is different) needed intervention. The vision theraphy was fantastic.
My child gets to sit near the teacher, hear stories on tape, has extra time for tests, gets to chew gum for her sensory issues, stops hw after a certain amount of time and does not get called on unless her hand is up.
Again, please be your child's voice. Make sure you have a PPT mtg when you feel it's necessary. At the end of the yr, I would always talk about the teacher my child should have the following yr. too.
Does he need to sit near the board, away from the window...Tell the doctor what works for your son. Feel free to use any of the suggestions above to talk over w/ the doctor.
You will need to address his needs with each teacher each and every yr.
Having 2 yrs of training as a teacher in special ed (in addition to my regular ed certification) , I found that many of the teachers were looking for my help.