@orthodoc said:
I wear glasses and think that if RIC wire were a few mm, longer that glasses would not be as much a problem displacing the aids when taking glasses off and putting them on. How did audio determine what length wire was appropriate?
He measured your ear with a tool, or he used demo hearing aids on you and noted if the real thing should be ordered with shorter or longer tubes than he used on the demo aids.
In any case if you think that the tubes are too long or too short, he should be able to switch them out for you no problem.