Eye contact permission

Hi

I'm not sure if this has been discussed. I had a search and eye contact has been discussed so many times but I'm not finding anything that fits my question. Anyway, here it is...

As many do, I struggle with eye contact. I recently went for an eye test and was measured up for vari-focals. I put the glasses on and was asked to look directly into the eye of the person so they could mark where my pupils are. Anyway, I had no difficulty with this even though I didn't know them. It got me thinking, is it because I was given permission and was not invading their privacy? The other people there hadn't asked me to look into their eyes so I couldn't.

I may be reading too much into it. It might be that the person measuring me for glasses wasn't expecting me to interact with them while the others were but it gave me no anxiety / pain / whatever at all.

Thoughts?