I know it’s super nerdy (I think I lost that fight long ago lol) but the ideal way would be to use this in SteamVR as your home environment (just hit ‘Subscribe’ in Steam, and then when in your SteamVR home house, press the small button to bring up the menu, and it’ll be in your ‘Environments’ selection):
…and then go stand on the 6 meter line (the ‘20’ line in SteamVR env) and see what line you could read on the eye chart. On the O+ I can’t read Line 11 for example.
That way @BeachAV8R could then plug in the O+ again and have a decent apples vs apples comparison guideline. It’s also useful for gauging FOV and color correction.
Otherwise he’s having to go find a 109 flying 2000 meters away, which is still something to do but this is more sciencey (that’s a word, right?).