After three years of teaching high school science and biology, Dr. Metzger went back to school and graduated from the University of Houston College of Optometry. He established his first practice in Hiawatha, Kansas beginning in 1977. In 2005 Dr. John and his wife Jean followed their children and grandchildren to Overland Park, KS. Dr. John is "The Sunday Guy" at Professional Eyecare.
- American Optometric Association
- Brain Injury Association of Kansas City
- College of Optometrists in Vision development
- Kansas Optometric Association
- Neuro-Optometric Rehabilition Association
- Optometric Extension Program Foundation