Meet Our Doctors Demi Dang, M.D. Specialties: Cornea & Refractive Surgery Cataract Surgery BOTOX® Injection >> Dr. Dang’s Biography Helen Song, O.D. Specialties: Contact Lens Fitting Ocular Disease Management >>Dr. Song’s Biography Chelsea Mathis, O.D. Specialties: Diagnosis and management of Ocular diseases Routine Eye Exams and Contact Lens Fittings >>Dr. Mathis’s Biography Our DoctorsMeet Our Doctors Demi Dang, M.D. Helen Song, O.D. Chelsea Mathis, O.D. Eye Care Specialists Working with Physician Partners