For Eyes Vision Plan Can You Use Multiple Vision Insurance Plans At The Eye Doctor?

Can you use multiple vision insurance plans at the eye doctor? - for eyes vision plan

I visited the eye doctor recently and wanted to buy a new pair of glasses. I have a vision plan through my employer, the additional insurance through the employer about the vision of my wife, and a small profit in connection with my basic health insurance.
The seller told me that he could use the insurance that insurance in accordance with the rules. It was a surprise, since my wife has the same office visit six months ago and had no problems with their insurance for primary and secondary sources.
Is this person telling the truth?