I was having the same issue and was looking into a clarifier until i found out it only helps when using a lens style sight. Just using the clarifier to clear up the target itself wont help.

Maybe try shooting with both eyes open, that may help. Most people were telling me your eyes will only focus on one or the other. Target or pins. They told me to concentrate on the target and it will clear up, but the pins may get blurry. Really didn't help me though.