Yes they can. I have noticed this especially with pet allergies. I try my best to keep my hands away from my eyes as much as possible to prevent this.
There are lots of factors which may cause you blurred vision. Are you a diabetic? You could have diabetic eye disease or even hypoglycaemia (low blood sugar), both of which cause visual disturbances.
Do you wear contact lenses? Have you had laser eye surgery? Both of these cause dry eye, which makes your vision blurred.
If you have lubricating eye drops try a few in each eye and see if your blurred vision disappears. There are other more serious causes of blurred vision and it is a good idea to see your doctor or optometrist for further discussion.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.