Are the glasses a little brown?

Are your glasses nearsighted or sunglasses?

Not if it's a myopic lens. Because many optical shops call ordinary resin blue film lenses radiation-proof lenses, the anti-electromagnetic wave ability of these lenses is ok, but the anti-ultraviolet ability is generally insufficient, and the service life of these lenses is short. Most of the background color turns yellow in about half a year, the light transmittance is obviously reduced, and things look like cloudy days. Even some shops have just fitted their glasses because of the backlog of lenses.

If you wear radiation protection glasses, it is recommended to use well-known brands, such as Essilor, Zeiss and Su Na. Nikon and TAG Heuer are not recommended, and we boycott Japanese products. If you think it's too expensive, if you use domestic products, then the background color of the real anti-radiation lens itself is blue or close to blue. After you buy it, use the ultraviolet tester in the store to test it.