Professor Stefan Pieh is an Austrian ophthalmologist specializing in refractive eye surgery, teaching at the Medical University of Vienna and heading the Eye Refractive Surgery Center. He has experience in refractive surgery, cataract surgery, corneal diseases, and is a honorary member of several ophthalmological societies, including the Vienna Ophthalmological Society, the Austrian Ophthalmological Society, the Association of Austrian Eye Surgeons, and the European Society of Cataract and Refractive Surgeons.