Dr Kretz MD is an internationally renowned ophthalmologist, surgeon, speaker and researcher. As founder and CEO of PVK Precise Vision, and the Precise Vision Ophthalmologists group, he practices across multiple locations, and as a traveling surgeon for several other ophthalmology clinics around the globe. There, he has established new treatment methods for cataract surgery and published more than 100 journal articles. He also runs the not-for-profit Augenärzte für die Welt gGmbh supporting the Khmer Sight Foundation in Cambodia.