When you have a cataract, the natural lens of your eye becomes cloudy, and because of this, the lens is more difficult to see through. Cataracts can cause blurry vision, seeing double, and problems with night vision. You may also notice that bright colors appear dull. Another common symptom of cataracts is dim vision, which makes it seem like the lights have been dimmed in the room. Here are some options that may help treat your dim and blurry vision if you have cataracts.