Dr. Jung-Kai Tseng is currently working as a Professor in the Department of Optometry, Asia University , Taiwan . His research interests includes Optometry. He /she is serving as an editorial member and reviewer of several international reputed journals. Dr. Jung-Kai Tseng is the member of many international affiliations. He/ She has successfully completed his Administrative responsibilities. He /she has authored of many research articles/books related to Optometry.