The official Microsoft Enthusiast’s Guide for Windows Mixed Reality in the Reverb G2 FAQ section recommends that if you normally need prescription correction for your vision that you wear your glasses or contacts with the headset. Doesn’t have any warnings about scratching lenses that I recall and doesn’t say anything about presbyopia. Because I normally need a +2.5 OD reading glass correction, even though the virtual image is !2 m or so away, I thought I might need some +OD correction but things look pretty good today in the G2 sweet spot without wearing glasses. PSA: Reverb G2 small sweet spots, observations and solutions - #25 by JALxml