Trusit Dave is an optometrist, researcher, and inventor. He has a PhD which involved research into corneal topography and the development of topography based algorithms. He has spent 20 years in two specialist optometry practices in England which he still owns. He is also a fellow of the American Academy of Optometry. Trusit has published papers in various journals and is also the co-author of Orthokeratology: Principals & Practice and has lectured all over the World. He is a consultant to the contact lens industry, and a medico-legal expert.