My son is autistic.  His eyes are often blood shot.  We wonder if it is due to allergies but we note that one day they are not bloodshot and the next day they are.  He does not cry, ever, but I noted today than upon his mother being away for 2 days that tonight his eyes are blood shot and heavy with moisture.  It makes me wonder if his eye condition is related to sympathetic discharge of his autonomic nervous system.  If I had his problems related to autism I believe i would be crying a lot. Thank you for any insights you might have regarding his condition.
Hi, Thank you for posting your query.First, I would like to reassure you that his redness of eyes are not related to any abnormalities in the sympathetic or other parts of nervous system. These are most likely due to allergies, as you suspected. Allergies need not occur every day, and it is fairly alright if his symptoms are intermittent. He would benefit from treatment by an ophthalmologist, so please consult an ophthalmologist. I hope it helps. Please get back if you require any further information. Best wishes, Chat Doctor. Ly/