Dr. Tseng is a physician scientist and received MD from National Taiwan University Medical School in 1978, and PhD from University of California San Francisco in 1981. He completed the ophthalmology residency at Johns Hopkins Hospital (1984) and the cornea and external disease fellowship at Massachusetts Eye & Ear Infirmary, Harvard Medical School (1986). He was Charlotte Breyer Rodgers chair professor at Bascom Palmer Eye Institute University of Miami School of Medicine (till 2002). He served as the first President of International Ocular Surface Society (2000 to 2004). He received Senior Achievement Award (2004), Secretariat Award (2005), and Life Achievement Honor Award (2016) from American Academy of Ophthalmology, and is an ARVO Gold Fellow.