Invited Lecturer/Speaker: 11th Asian-Pacific Optometric Congress, Seoul - April 21, 1997.

10th Asian-Pacific Optometric Congress, Singapore - April 18, 1995.

AOA Paraoptometric Meeting, Minneapolis, Minnesota - June 26, 1994.

29th Annual Optometric Institute, St. Louis, Missouri - April 4-5, 1992.

Coordinator - Anterior Segment and Contact Lens Symposium, Geisinger Medical Center, Danville, Pennsylvania - February 28, 1992.

Coordinator - Clinic Seminar Program, Fall and Winter Semesters, University of Missouri - St. Louis, School of Optometry -1990 and 1991.

Bethesda Eye Institute Ophthalmic Technician Program, St. Louis University, Department of Ophthalmology, St. Louis, Missouri - 1990 and 1991.

Coordinator - Pharmaceutical Agents Designed for Use with Contact Lens Programs, University of Missouri, St. Louis, Missouri - March 17, 1991.

International Society for Contact Lens Research Meeting, Monte Carlo - August 31 - September 3, 1990.

Cornea and Contact Lens Update - 1990, Bethesda Eye Institute, St. Louis University, Department of Ophthalmology, St. Louis, Missouri - September 15-16, 1990.

27th Annual Optometric Institute, St. Louis, Missouri, March 31 - April 1, 1990.

Cornea and Contact Lens Update - 1989, Bethesda Eye Institute, St. Louis University, Department of Ophthalmology, St. Louis, Missouri - September 23, 1989.

26th Annual Optometric Institute, St. Louis, Missouri - April 23, 1989.

St. Louis Contact Lens Forum - paper entitled Computer Assisted Design-Contact Lenses, St. Louis, Missouri - April 22, 1989.

Coordinator - Pharmaceutical Agents Designed for Use with Contact Lenses Pharmacist Program - St. Louis, Missouri - March 12, 1989.

State University of New York College of Optometry, Invitational Contact Lens Lecture Series, New York, New York - June 1, 1988. 

25th Annual Optometric Institute, St. Louis, Missouri - April 10, 1988.

St. Louis Contact Lens Forum - paper entitled Management of Keratoconus with Contact Lenses - St. Louis, Missouri - April 9, 1988.

Panel Member, First Materials Science Symposium, Center for Cornea and Contact Lens Research, University of Missouri, St. Louis, Missouri - March 21, 1988.

Gateway to Ocular Therapeutics, St. Louis, Missouri - November 19, 1987.

Maryland Optometric Association, Baltimore, Maryland - April 6, 1987.

24th Annual Optometric Institute, St. Louis, Missouri - March 29, 1987.

St. Louis Contact Lens Forum - paper entitled, The Trouble with Tints - St. Louis, Missouri - March 28, 1987. � Illinois Optometric Association, Matteson, Illinois - March 22, 1987.

64th Annual Southern Educational Congress, Atlanta, Georgia - February 20, 1987.

British Columbia Optometric Association, Vancouver, British Columbia - February 10, 1987.

Air Force Optometry Seminar, Wichita Falls, Texas - December 3, 1986.

Computer Conference Lecture - Acathamoeba via Eyecare Forum (OPNET) - November 2, 1986.

University of Specialty Contact Lens Fitting, 23rd Annual Optometric Institute, St. Louis, Missouri - March 15, 1986.

22nd Annual Optometric Institute, St. Louis, Missouri - March 31, 1985.

Invited Moderator, Contact Lens Panel - Extended Wear, AOSA Congress, St. Louis, Missouri - January 10, 1985.

Invited Moderator - Contact Lens Panel - Extended Wear, St. Louis Optometric Society, St. Louis, Missouri - August 14, 1984.

Workshops in Optometry, St. Louis, Missouri: Introduction to Slit-Lamp Biomicroscopy - August 7, 1984.Flexible and Non-Flexible Contact Lens Fitting - August 8, 1984.Special Designs in Contact Lenses - August 9, 1984.

Panel Member, Interprofessional Seminar, Extended Wear in the 80's, Washington University, Department of Ophthalmology, St. Louis, Missouri - April 27, 1984.

21st Annual Optometric Institute, St. Louis, Missouri - March 25, 1984.

61st Annual Southern Educational Congress, Atlanta, Georgia - February 24-25, 1984.

Saskatchewan Optometric Association, 49th Annual Continuing Education Program, Saskatoon, Saskatchewan - May 12-13, 1982.

Heart of America Contact Lens Congress, Kansas City, Missouri - February 11-12, 1982.

3rd International Symposium on Contact Lenses, Quebec City, Quebec - October, 1981.

Optiform III Symposium (Optifair Midwest) Chicago, Illinois - June 4, 1981.

Ontario Association of Optometrists, Mid-Winter Congress, Toronto, Ontario - February 20, 1981.

Moderator, Symposium on Pharmaceutical Agents Designed for Use with Contact Lenses, Waterloo, Ontario - February 7, 1981.

Ontario Association of Optometrists, Optometric Assistants Program, Fall Seminar, Waterloo, Ontario, October 1, 1980.

Contact Lens Association of Ophthalmologists (CLAO) - Resident Training and Contact Lens Fitting, A. Subong, G. Arunagiri, and D. Egan - January, 2002

American Academy of Optometry (AAO) - Optical Treatment of Oscillopsia - May 26, 1996.

Association for Research in Vision and Ophthalmology (ARVO) - Optical Treatment of Downbeat Nystagmus Induced Oscillopsia - May 15, 1995.

Egan D. Lecturer, Eleventh Asian-Pacific Optometric Congress, Seoul, Korea, April 21, 1997, Broadband Filters for Red-Green Deficiency. Piggyback Contact Lenses in a Patient with Mesodermal Dysgenesis.