Dr. Koo has extensive surgical experience, has participated in F.D.A. trials of new eye technologies, and continues to lecture about ophthalmology. In 2004, she published ?Office Ophthalmic Procedures? a popular handbook for eye care professionals. She is also a member of the American Academy of Ophthalmology, the American Society of Cataract and Refractive Surgeons, and the San Mateo County Medical Society.