By Logan Mahan There are many benefits to buying your prescription glasses online. For starters, it’s often more cost-effective because you’re cutting out the middle man. There’s also the obvious convenience of getting to choose and try on frames in the comfort of your own home. But perhaps most importantly, there are endless options. No more settling for the best worst pair at the eye doctor. As one of the largest online prescription glasses retailers, GlassesUSA offers an array of high-quality designer and house brand glasses from Ray-Ban to Gucci. We were able to try a pair of the Ray-Ban R…