What are blue light blocking glasses? Can blue light blocking glasses prevent myopia?
- What are blue light blocking glasses?
Blue light blocking glasses are glasses with blue light blocking function. Anti-blue light glasses can prevent blue light from irritating the eyes, special anti-blue light glasses can effectively isolate radiation and ultraviolet rays, and can filter out blue light, suitable for use when watching mobile phones, TVs, and computers.
Anti-blue light glasses mainly reflect harmful blue light through the coating on the lens surface, or add anti-blue light factor to the lens base material to absorb harmful blue light, thereby realizing the blocking of harmful blue light and protecting eyes.
2.Can anti-blue light glasses prevent myopia?
Blue light blocking glasses do not prevent myopia. Blue light simply has the potential to cause retinal damage, and that likelihood is related to the amount of blue light the retina receives. In other words, blue light exposure can only cause retinal damage after sufficient time and a certain intensity.
When the wavelength of blue light is below 445 nanometers, the light intensity exceeds a certain range and is prone to photochemical damage to the retina when irradiated for a long time. Among them, short-wave blue light near 435 to 440 nanometers is the most harmful.
The main damage to the eyes from blue light may be macular degeneration in the fundus, but this is produced under prolonged, high-intensity exposure. At present, the medical community believes that the main factor affecting macular degeneration is age, not blue light.
Secondly, electronic products of qualified quality have filtered harmful short-wave blue light, and their blue light hazard values are basically at a non-hazardous level. The blue light exposed to the correct use of mobile phones and tablet computers generally does not cause damage to the eyes.
