Allan, There are a number of exchanges recorded in the Simon Coles Archives and this was particularly interesting as it ties up the eye problem with disorders of the lower face. Still looking for the one I can't find. regards http://parkinsn.coles.org.uk/Parkinsons/PARKINSNLog.nsf/c195194997949d288025 6733002fd35a/4dc38b4e2583c2e68025667a001e2b3e?OpenDocument&Highlight=2,PDPLU S