Dear Mark,
Your knowledge and helpfulness are a gift. I read your posts first and you are a blessing. I heard people should share our gift for free, and you do.

Your advice calms probably more than a visit to the doctor who probably doesn't have pcs and you know we thank you! When my head hurts every time I drive over a speedbump I think of your advice.

I saw neurologists and my pupils are different sizes by millimeters. Will google Horners.