Safety Evaluation of 4 Red Light Therapy Devices for Myopia

These findings suggest that laser-based red light therapy instruments deliver irradiance levels that reach ANSI safety limits within exposure times below the recommended 180-second treatment time. These findings, combined with emerging clinical reports of retinal damage and recent regulatory reclassification of red laser devices as Class III in China, highlight the need for rigorous, independent safety validation before widespread pediatric use.