I have never in 26 years had to show my vision insurance card, I tell them who I am insured with and it has been on record the whole time, never even asked about it just asked if I am still with the same insurance.

My pet peeve, don't dialate my eyes then expect me to be able to pick out glasses...I got there 15 minutes early to pick out frames, don't make me go back for the appointment because its easier for you, I specifically said I arrived early to pick out frames without dialation.