INVENTED by a Hong Kong university department, contact lenses that slow the progress of short-sightedness by 60 percent have been put into mass production. Made for short-sighted children aged six to 18, the lenses will be on sale soon, and a year’s supply of four pairs will cost HK$8,800.
Around 10 years ago, the Hong Kong Polytechnic University invented Defocus Incorporated Soft Contact (Disc, 光學離焦) technology, which slows down the speed of short-sightedness progression in children. This technology can even be used on electronic screens and lowers the chance that users’ shortsightedness would worsen.
To Chi-ho (杜嗣河), of PolyU’s School of Optometry, said the user’s vision might still be a bit unclear, as if looking into a fog. He said the research team published their findings around 2013, but could not find ways to start mass producing the lenses.
(This article is published on Goodies on 31 January 2018)