0.05D High Precision Lens Verification by Authority Products
International Expert Team
integrates worldwide research results

With innovative ophthalmology technology, 

a global team of optometric experts and institutions continuously conduct clinical experiments
and create extraordinary precision on the way to exploring higher precision optical lenses.

Pioneer of spectacle lens designs
Prof. Mo Jalie

Internationally pioneer of optometric education and research
(Authored several publications in the 1960s which had been used as optometry textbooks in universities globally)

Hold several patents for aspheric lenses and intraocular lenses Professor of Geometry and Physical Optics, University of Ulster,
UK Chairman of the Advisory Board of Essilor International Academy of Optometry,
 France Visiting Professor at Essilor European Education Institute Visiting Professor at Hoya Optical, Japan

Pioneer of America optical lenses
Dr. William Plummer

Member of the National Academy of Engineering
Fellow of the Optical Society of America Fellow of the Society of Photo-Optical Instrumentation Engineers (S.P.I.E.)

Recipient of the David Richardson Medal in Applied Optics of the Optical Society of America Recipient of the Joseph Fronhofer Prize in Optical Engineering and
the Robert Burley Prize in Optical Engineering Recipient of the Photonics Spectroscopy Magazine Team Excellence Award and
the R&D 100 USA Award Awarded 102 U.S.
patents for the inventions in vision, photography and technical optical systems

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Clinical Trial
Verification

PRAZIS has pooled professional resources in countless clinical experiments, comparison, observation and verification,
thus creating a higher precision standard for PRAZIS fitting.

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  • The world’s leading optometric research institute
    Clinical trial at the
    University of New South Wales
    Clinical trials at the University of New South Wales Optometric Research Centre in Australia, demonstrated :

    Almost all subjects were able to achieve Duochrome equality in 0.05D step lenses.

    The 0.05D step spectacle lenses are preferred over 0.25D step lenses.

    Duochrome equality increases from ;56% to 94%

    Source: 《A randomized, double-masked, cross-over clinical trial to compare the vision performance of spectacles prescribed to 0.05D versus 0.25D steps 》 (Clinical Trial by School of Optometry and Vision Science, University of New South Wales)

  • The world’s leading optometric medical institute
    Clinical trial in
    Beijing Tongren Hospital
    PRAZIS 0.05D High Precision Lens than conventional 0.25D Lens

    Fitting accuracy increases to 82.7%[1]

    Reduction in the average monthly rate of myopia progression is 63%[2]

    Close to the effect of peripheral defocus lenses and orthokeratology lens[2]

    [1]source:《Effect of reducing the interval of spherical trail lens in improving the rate of red-green equality on the Duochrome test and visual quality 》. 《Ophthalmol CHN》, 2021, Vol.30, No.3:184-188(by Beijing Tongren Hospital etc.)

    [2]Source: Decreasing the Spherical Lens Adjustment Interval Maybe Delay the Progression of Children’s Myopia (by Beijing Tongren Hospital etc.)

  • More evidence from international studies
    02
  • [1]

    Role of un-correction, under-correction and over-correction of myopia as a strategy for slowing myopic progression
    Nicola S Logan,James Stuart Wolffsohn December 2019.Clinical and Experimental Optometry. 103(2)
    DOI:10.1111/cxo.12978

  • [2]

    Undercorrection of myopia enhances rather than inhibits myopia progression
    Chung K,Mohidin N,O’Leary DJ.Vision Res,2002,42(22):2555-2559

  • [3]

    Consensus on Myopia Management for Asia

    M JONG, SRESNIKOFF, etal., J Optom, Eye and Health Research 2022,Vol.3 No.3 June 2022, 1-15



  • 0.05D High Precision Lens

    Higher assurance for full correction,
    slows down the progression of myopia.

    03
    More experimental results show that
    04
    The contrast sensitivity of 0.25D step spherical lens is considerably lower than that of 0.05D step spherical lens at all spatial frequencies and for both left and right eyes.

    Source:《Effect of reducing the interval of spherical trail lens in improving the rate of red-green equality on the Duochrome test and visual quality 》. 《Ophthalmol CHN》, 2021, Vol.30, No.3:184-188(by Beijing Tongren Hospital)


    Refine steps of spherical trial lens are much more likely to achieve Duochrome equality and the myopic can enjoy better vision quality by wearing 0.05D step spherical trial lens.

    Source:《Effect of reducing the interval of spherical trail lens in improving the rate of red-green equality on the Duochrome test and visual quality 》. 《Ophthalmol CHN》, 2021, Vol.30, No.3:184-188(by Beijing Tongren Hospital)


    Professional Clinical trials

    Since 2018, clinical trials of 0.05D step lens have been carried out at the University of New South Wales.
    During the same period,the National Eye Center and Beijing Tongren Hospital, the world's leading ophthalmic and optometry medical institution, also conducted clinical trials to verify 0.05D step precision optometry. The authoritative clinical trial results and scientific and comprehensive verification affirmed and recommended by world's well-known optometry expert team. 

    2018
    Professional Clinical trials

    In 2020, 0.05D step lens have been piloted and promoted in Wuxi No. 8 People's Hospital, South Hospital and North Hospital of Affiliated Hospital of Jiangnan University, and Guangzhou Top Doctor Center, which have been fully affirmed and widely acclaimed by doctors and consumers.

    2020