Aside from built-in technology to filter or block blue light, so-called “blue blockers” aren’t any different than ordinary or prescription eyeglasses. The best pair for you depends on a few things, including when and where you plan to wear them, how much you’re looking to spend, and whether or not you already wear prescription glasses. Here’s the low-down on what to look for in your own “best” blue-light-blocking glasses.
Blue-light-blocking ability
Right now, the science behind blue-light blocking is a little gray, and some manufacturers use buzzwords about their eyeglass technology that may or may not mean anything. The most important feature of BLB glasses is the wavelengths they’re able to block. Light is measured in nanometers (often noted as “nm”), with blue-light wavelengths ranging between 400 nm to 500 nm. For the most effective blue-light-blocking, you’ll want a pair that works to filter out light in this range. Ask the manufacturer if you’re unsure. If they don’t know or are unwilling to provide that information, we recommend shopping elsewhere.
Also, blue-light-blocking glasses can be optically clear, amber or yellow tinted, or dark, like traditional sunglasses. In general, the darker the glasses, the more blue light they’re capable of blocking.
Anti-glare coating
As the name implies, an anti-glare coating can help to further minimize eye strain. They’re often more comfortable to wear, especially for long work days full of Zoom meetings and screen time. But if you’re mainly looking for blue-light-blocking glasses to wear before bed, amber- or yellow-tinted models (without an anti-glare coating) might work just fine for you. Even if you’re not crazy about the look, you’re unlikely to wear them out of the house, so here it’s more about function over style.
Price
Blue-light-blocking glasses are priced in line with most typical eyeglasses. Over-the-counter (OTC) pairs are available for less than $10, while midrange options are priced between $50-$100. The best, premium, designer blue blockers, especially with prescription lenses, typically run between $100-$200 or more. But know that you don’t have to spend a fortune to land a decent pair.
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