The 25th Hong Kong Optical Fair will be held from the 8th of November to the 10th of November in the Hong Kong Convention and Exhibition Centre. The admission is trade only with no visitors under 18 allowed. At this expo, you can find binoculars, optometric instruments, and sporting eyewear. If you are in the optometry field or the fashion industry, this may be a good fair for you to check out.
Click this link to learn more:
http://m.hktdc.com/fair/hkopticalfair-en/HKTDC-Hong-Kong-Optical-Fair.html