I just listened to a podcast interview with an Alexander Technique Teacher who related a story about her student who had purchased brand new glasses. The student had paid several hundred dollars for them. They were the style of the moment with very small lenses.
And in order to look through the “sweet spot” and see clearly, the student had to put his head in an awkward position that created tension in his neck and pulled it off balance. The teacher had pointed this out to him.