Not long after I moved to Virginia someone joined our team at work who happened to be a retired optometrist. Dave was also a really nice person. Our team traveled extensively and Dave and I were on many trips together. He'd often ask me to take off my glasses, then he'd gaze at them and say, "Ah, yes, they're..." Which was sooo much better than people who'd insist on trying them on, then exclaiming, "God, you're really blind!" (This is why I wear glasses, you nitwit.)