Hello - I got diagnosed with TBI a month ago, but have been dealing with symptoms for the last 4 years!

I hit my head 6 years ago, and 2 years later I started having trouble focusing my eyes and became sensitive to light. I wasn't able to explain the symptoms until my current ophthalmologist suggested it was due to my head trauma.

Has anyone else experienced this long of a lag? Is this possible? I didn't have a second head trauma - could anything else have triggered the onset?

Thank you!