instruction: when I sit in class and try to focus in class my pupils moves at corner of eyes involuntary my eyes if try to focus to the blackboard I feel strain in my brain and feel difficulty in breathing I am having this problem from last year this arise when anybody is sitting around me I used watch video more than hours per day I also had stress last year but this year I do not have any stress I had checked my eyes but these are normal eye number and also checked my thyearoid test it also normal I have already asked this question many times but I did not get satisfactory answer please give suggestions