Sustained Effect of Red-light Therapy for Myopia Control: A 2-Year Post-Trial Follow-up Study

Red-light therapy was performed with a low-intensity laser (LD-A, Jilin LD Optoelectronics Technology, Jilin, China) with an irradiance of 0.35 ± 0.02 mW/cm2, a wavelength of 650 nm ± 10 nm, and illumination of approximately 400 lux on average.

Single focus spectacles, that is to say, wearing glasseses with minus power lens