When I get hit the screen flashes bright, and stays that way

[Dillydawg 3]

Title says all, I run this game on lowest graphic settings btw because of my less than ideal computer, but when I am hit by a zombie, my whole screen goes bright and the game becomes unplayable as I can see almost nothing. This is especially irritating because i usually cannot hit the zombie back because I can not see him after he hits me.

The only fix I have found is going into video options, and then closing out, changing nothing, and it goes back to normal until I get hit again.

Any help appreciated thanks.