Random - has anyone had super dilated pupils since their TBI?

My eyes have been crazy dilated at the most random times. For a while I was assuming it was just a sympathetic response to anxiety or maybe my eyes had always been like that and I'd never noticed. The other day however, a friend noticed and she told me they were huge! Looking very similar to after you leave the optometrists office.

I asked the doctor and he mentioned something about nerve damage to the spine at the level of my neck. Just wondering if anyone has experienced this also?