Posted by Laurence on September 04, 1998 at 11:09:42:
In Reply to: Eye color link toCH? posted by Tom Collins on September 04, 1998 at 10:50:26:
Tom this is copied straight from the information in the "Fantastic" link on the top of the message board:
"Graham (1972) formed the impression that certain physical features seemed to be characteristic of cluster headache patients. These include a ruddy complexion, multifurrowed and thickened skin, and a broad, prominent chin: all contributing to a "leonine" facial appearance. However, these observations were uncontrolled, and I have been unable to confirm them. There is no evidence that important psychological variables bear on this syndrome (Cuypers et al, 1981; Kudrow, 1980)".
No mention of eye colour in that text but it might just lead you on by cross references to what you are seeking.