The Zeiss lens inserts for Vision Pro come with a QR-like code on a card. When you’re setting up Vision Pro, if you use lens inserts, there’s a point where you scan that code by looking at it. This pairing lets Vision Pro know exactly what your lens prescription is, and it adjusts its eye-tracking accordingly. The review unit package Apple sent to me included the correct lens inserts, but the incorrect code card for those lenses. This mistake was specific to my review unit, and, Apple told me, will not be a problem for customers. Apple emailed me to inform me of the mistake, and included the correct code to scan. But I spent the first two days of testing with lens inserts that weren’t correctly calibrated. Everything looked fine visually (because the lenses were correct for my prescription) but eye-tracking was off. Not unusable, but certainly less accurate than what I’d experienced in my numerous hands-on demos in the preceding months. And, the day before Apple notified me of the mistake and sent me the correct code for my lenses, after a few hours using Vision Pro, I developed a nasty headache and, eventually, a wee bit of nausea.
After recalibrating with the correct code for my lenses, I had even longer sessions of continuous use, with no headache or discomfort, and absolutely no nausea. I include this anecdote here only as evidence that calibrating Vision Pro for your specific vision is seemingly essential.
