Dr. Millichamp graduated from the Royal Veterinary College, University of London in 1978. After working in small animal practice, he spent three years at the Animal Health Trust, Newmarket, and at the Institute of Ophthalmology, University of London, pursuing doctoral research on inherited retinal degeneration and retinal surgery in dogs. He completed residency training in comparative ophthalmology at the College of Veterinary Medicine, University of Florida and became a Diplomate of the American College of Veterinary Ophthalmologists in 1985. He was awarded a Diploma of Veterinary Ophthalmology from the Royal College of Veterinary Surgeons in 1986. Dr. Millichamp became a diplomate of the European College of Veterinary Ophthalmologists in 2004 and was elected to the Board of Regents of the American College of Veterinary Ophthalmologists in 2008.
Dr. Millichamp was a staff ophthalmologist at the Veterinary Medical Teaching Hospital and a faculty member in the Department of Small Animal Clinical Studies at the College of Veterinary Medicine at Texas A&M University from 1986 until 2009. His clinical and research interests have focused on the pharmacology of ocular inflammation, ocular surgery (particularly cataract surgery in horses), ocular disease in exotic species and ophthalmic telemedicine and imaging. Dr. Millichamp lectures internationally, has published many papers in scientific journals and contributed to several textbooks of veterinary ophthalmology. He was a consultant for Central Texas Veterinary Ophthalmology before establishing offices with Eye Care for Animals in 2009.