Dian, Yu M.D.Attending PhysicianOphthalmology Education: University at Buffalo School of MedicineMain Office:703-430-4400 Loudoun Medical Group 21475 Ridgetop Circle #300 Sterling, VA 20165 Clinic Intersts:cornea and external disease.Certification: Board Certified in Ophthalmology Hospital Affiliations:Medstar Georgetown University Hospital