Defocus Incorporated Soft Contact (DISC) lens
The DISC lens is a multi-zone bifocal soft contact lens which comprises optical zones for correcting refractive error and “positive” defocus zones for myopia control. It won a Grand Prize and a Special Gold Medal at the 39th International Exhibition of Inventions of Geneva in 2011. A PolyU supported start-up, VST, has been licensed for the production of DISC lens, which is available on the market. PolyU also prescribes DISC lens at its Optometry Clinic and provides training in ﬁtting the DISC lens on the eyes for optometrists.
Defocus Incorporated Multiple Segments (DIMS) Spectacle Lens
Jointly developed by PolyU and its research collaborator Hoya Corporation, the DIMS lens is divided into zones – the central zone is a regular concave lens for corrected vision at the centre of the retina, while the rest of the lens is made up of numerous tiny lenses that focus light slightly in front of the retina to create peripheral myopic defocus. The DIMS lens won the Grand Prize (overall championship), a Grand Award and a Gold Medal with the Congratulations of Jury at the 46th International Exhibition of Inventions Geneva in 2018. It is available on the market and in PolyU Optometry Clinic.