Blue light is harmful to the eyes, mainly in that it may increase the chances of cataracts, macular degeneration and other diseases in those who have been irradiated. Blue light is a relatively common component of visible light, especially computer screens, cell phone screens and other components that emit blue light is more. Living with excessive exposure to blue light has the potential to increase the risk of developing eye diseases such as cataracts and macular degeneration. This is because the lens inside the human eye and the retina in the macular area will absorb a large amount of blue light components, causing cumulative light damage, which can lead to the above diseases. If you are exposed to blue light for a long period of time because of your work or life, you need to pay attention to the protection of your eyes. It is recommended that patients with ocular discomfort consult a doctor promptly to assess their condition and choose the appropriate treatment according to the doctor’s instructions.