It should be said that the difference between technology and quality is like cloth, which can be worn. But in terms of pilling, fading, wearing comfort, skin contact and other details, brand products will have a better grasp of quality and details, especially functional lenses.

Generally speaking, a good anti-blue lens selectively filters high-energy blue light (harmful to macular area of retina) and absorbs blue light beneficial to people's health. By using thin film reflection, the yellowing degree of background color will be lower and the light transmittance will be higher.

You can watch this video.

Just because you haven't heard of this brand doesn't mean it's unprotected.

As for whether the price is reliable, it is hard to say that even if some big brands lens and some businesses engage in activities, the price will be unexpectedly lowered.

Finally, choose blue lenses rationally and choose brands as safely as possible according to your actual situation.