Dear Ray; Thanks for the input of info. about eyes and PD - some I'll have to deal with later but I've filed it and appreciate the leads - sometimes I really like to challange myself to read and understand heavy scientific stuff - right now my mind is kind of dull - the school district where I'm working is getting bomb threats and it seems the whole world is getting more crazy at a faster pace - and then PD puts my husband on a slower track! My head gets plumb fuzzy at times with it all..... Sure is helpful to know people really are "out there" though looking for the answers even when I feel I can't go anymore.... Marie