Mr Yap is an experienced optometrist,graduating from National University of Malaysia in 1996. Upon graduation, he joined a local eye hospital practice for 11 years, before setting up an optometry private practice at Prince Court Medical Centre, Kuala Lumpur. After 5 years there, Mr Yap left to head the optometry services in ISEC Penang in 2013.

He has attended various international courses, including a contact lens course organized by Cornea and Contact Lens Research Unit of University of New South Wales School of Optometry and Vision Science, Australia; National Focal Person for low vision, organized by World Health Organization; and Carl Zeiss LASIK user update course in Hang Zhou, China. My Yap has given various public health talks on refractive error, low vision and contact lenses, both at local hospitals and international conferences.