>>273515589
>>273515779
Measured IPD is not a reliable way to predict if the headset will work for you, if you are on the edge. That is because of variances in the measurement but also because other factors like facial structure and astigmatism. If your IPD is measured and it's on the edge, the only way to know for sure is to try the headset and return it if you find that you can't get your eyes in the sweet spot of the lenses very well. 

Also, my anecdotal observations also confirm that there are people with very high or very low IPDs that can somehow use the headset, while some with IPDs close to the mean couldn't tolerate it. So it's very much dependent on the individual.