Effect of repeated low-level red light on myopia prevention

A randomized clinical trial has found that repeated low-level red-light (RLRL) therapy can prevent myopia among children with premyopia. The 12-month trial involved 278 school-aged children in Shanghai, China, who were randomly assigned to either an intervention group receiving RLRL therapy twice per day, five days per week or a control group. The incidence of myopia was found to be lower in the intervention group, with up to 54.1% reduction in incidence among those not impacted by COVID-19-related interruptions. The RLRL intervention also significantly reduced axial length and SER changes compared with the control group. The device used, which delivers low-level red light with a wavelength of 650nm, was well tolerated and did not result in any adverse events.


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