michea,

Welcome to NeuroTalk.

Concussions and other brain related injuries are a process, not a single point in time event. You may have developed some inflammation around the optic nerve or something similar that finally became inflamed to a critical level. Some call these ocular concussions.

A re-read of the CT Scan by a neuro-radiologist or even a tele consult read of the scan may be worthwhile. There are radiologist offices that have specialists who find things than the generic radiologists do not see.

An assessment by a neuro-ophthalmologist would be worthwhile.