:-)
Naw, I think it was more of a spiritual gobsmackation.
The bright light described was the illumination of the Glory of God like Moses got a glimpse of when he got the 10 commandments.
So bright it blinded Paul/Saul.
I have some theater lights which are so bright you don’t want to have your eyes open towards them, I can only imagine the intensity of the brightness of the Glory of God.
But then he may have had a physical concussion too I would have to concede.