Activity case Asia-Pacific Academy of Ophthalmology Congress, Feb 6-11, 2018, HKCEC Asia-Pacific Vitreo-retina Society Congress, December 8-11, 2017, Kuala Lumpur Asia-Pacific Strabismus and Paediatric Ophthalmology Society , October 11-12,2017, Hong Kong Asia Pacific Tele-Ophthalmology Society, July 15 – 16, 2017, Hong Kong International Conference of Vision & Eye Research, 26-27 May 2017, Hong Kong Asia-Pacific Academy of Ophthalmology Congress, March 1-5, 2017, Singapore