期刊
JOURNAL OF CLINICAL MEDICINE
卷 10, 期 22, 页码 -出版社
MDPI
DOI: 10.3390/jcm10225462
关键词
violet light; eyeglasses; myopia; axial length; refraction; myopia control; double blinded randomized controlled trial
资金
- JINS HOLDINGS, Inc
The study found through a double-blinded randomized clinical trial that violet light-transmitting eyeglasses (VL glasses) have a suppressive effect on myopia in children, particularly in those with shorter near-work time and those who had never worn eyeglasses before the trial. The axial elongation suppressive rate in the VL glasses group was 21.4% over two years.
The fact that outdoor light environment is an important suppressive factor against myopia led us to invent violet light-transmitting eyeglasses (VL glasses) which can transmit violet light (VL), 360-400 nm in wavelength, for the suppression of myopia, and can meanwhile block harmful ultraviolet waves from sunlight. The current study is a double-blinded randomized clinical trial to investigate the myopia-suppressive effect of VL glasses compared to conventional eyeglasses (placebo glasses) that do not transmit VL. The subjects were children aged from 6 to 12 years old, the population in which myopia progression is generally accelerated, and the myopia suppressive effect was followed up for two years in a city in Japan. Periodical ophthalmic examinations, interviews, and measurements of reflection and axial length under mydriasis were performed at the initial visit (the baseline) and at 1, 6, 12, 18, and 24 months. The mean change in axial length in the VL glasses group was significantly smaller than in the placebo glasses group when time for near-work was less than 180 min and when the subjects were limited to those who had never used eyeglasses before this trial (p < 0.01); however, this change was not significant without subgrouping. The suppressive rate for axial elongation in the VL glasses group was 21.4% for two years.
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