The latest iteration of Meta's smart glasses has arrived and, as rumored, they are more customizable, particularly for people who need prescription lenses. Meta and Ray-Ban parent company EssilorLuxottica revealed two new styles of frames: the Ray-Ban Meta Blayzer Optics and Scriber Optics, which will start at $499 a pair.  The latest glasses are still considered to be part of the "Gen 2" Ray-Ban Meta glasses, but they do come with a few upgrades that make it easier to get a personalized fit. According to EssilorLuxottica, both styles have somewhat slimmer frames, swappable nosepads and adjustable temple tips so wearers can get a better fit. And, as the "optics" branding implies, the new frame styles are also compatible with a wider variety of prescription lenses, including progressive lenses and transition lenses.  The Blayzer style frames are more square, similar to the existing Wayfarer glasses, while the Scriber version is a little more rounded, like the "Headliner" style frames.…