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62From myopia control spectacle lenses to nano-polished scalpels, ultra-precision machining enhances our lives, one micrometre or even one nanometre at a timeSMALL IS POWERFULSmall ispowerfulMyopia, or nearsightedness, occurs when the eyeball is too long relative to the focusing power of the cornea and lens of the eye. It can be corrected either optically with spectacle lenses and contact lenses, or surgically. In the 2010s, a School of Optometry (SO) research team led by Prof. Chi-ho TO, Prof. Carly Siu-yin LAM and Dr Dennis Yan-yin TSE translated their research into the Defocus Incorporated Soft Contact (DISC) lens. This technology was commercialised in 2018 by Vision Science and Technology Co. Ltd (VST), a PolyU start-up co-founded by Prof. To and SO alumnus Mr Jackson LEUNG.DISC is a multi-zone soft contact lens made up of concentric rings that