If you have a very large or very small eye relief, you may have problems with different VR systems if the glasses have no adjustment options for the distance between the lenses. If the distance between the pupils does not coincide with the distance between the lenses, headaches and an unpleasant appearance may occur. While the Oculus Quest and the Oculus Rift rely on a mechanical fitting solution, the Oculus Rift S does not need such a feature. This is now being criticized by Palmer Luckey, founder of Oculus.
Oculus Rift S: Palmer Luckey criticizes fixed distance of the lenses
As Luckey writes on his own blog, he has a pupillary distance of 70mm, making the Rift S useless for him. Since I myself have a distance of 72mm, I can understand the displeasure of the inventor of the Oculus Rift. According to Luckey, the fixed lens distance would exclude about 30% of the world’s population. In the Rift, on the other hand, only 5% of people were excluded. Luckey also notes that software customization on the Rift S helps, but does not solve the problem. All further information can be found on the blog of Palmer Luckey.