Brick-and-mortar shops are sometimes reluctant to give PD information to a patient who isn’t a glasses customer, out of the understandable fear that they’re giving up business and that they may be held liable in the event that whoever does fill the prescription may do substandard work. You could wait it out and later this year have a much better option available at $500, or things could get worse, though we’re not sure there’s much more room to move in the ‘worse’ direction, dare I say it.
Pupillary distance asymmetries are more important to get just right if you wear progressives (and your PD will be slightly different for distance and close-up vision, making for a more complicated measurement). We think those who prefer large, bold, chunky statement frames will likely be best served by Diff, as will those looking for prescription or nonprescription sunglasses or readers, though there are plenty of everyday choices as well A recent large-scale literature review has suggested that there is no benefit to blue-light glasses and that they may not address the root causes of eye discomfort.
Gunnar suggests that their glasses – and blue-light glasses in general – are helpful in managing eyestrain from screen use. Everyone’s concerned about eyestrain and sleep disruption from overuse of digital devices these days, but while there’s a ton of discussion of blue-light protection out there and dozens of eyeglass makers addressing the problem, there isn’t much of a consensus about what exactly these sorts of lenses do.
While this works fine in our experience (we were contacted quickly by a representative to confirm details), we’d prefer to see an online tool that let us enter our data and check it ourselves. Where possible, to get a sense of the range of a retailer’s representative offerings, we ordered two pairs: one with the most affordable frames offered, standard lens thickness and no additional coatings and another with a premium frame with high-index lenses and the full complement of additional coatings offered.
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