Several years ago, Dr. John Raymond Christopher noticed a strange dot appear on the iris of the eye of a friend who had just broken his leg. Suspecting a correlation, he examined the eyes of hospital patients with broken legs, and diseovered similar patterns on their irises. Dr. Christopher, a natural healer und herbalist has been studying iridology (the study of the iris to determine disease and ailments) for some time now, and on Monday-Friday, February 24-28. he will be lecturing in Ann Arbor at the Michigan Union from 7:30-10:30 p.m. The first lecture is free; the following evenings are $3 each. Dr. Christopher will also be giving individual iridology readings on Tuesday-Friday, 9 a.m.-5 p.m. in the Union. The fee is $1 5 per hour. For more information, cali Pam at 994-9174 or stop off at the new People's Food Coop, 212 N. Fourth Avenue.