Iron deficiency (sideropenia or hypoferremia) is one of the most common of the nutritional deficiencies. Iron is present in all cells in the human body, and has several vital functions. The symptoms of iron deficiency are fatigue, dizziness, pallor, hair loss, twitches, irritability, weakness. Blurred vision refers to a lack of sharpness of vision resulting in the inability to see fine detail. Iron deficiency has a slightly side effect on eye sight, but it is hardly to cause blurry vision. Blurry vision is commonly due to astigmatism, glaucoma, myopia, dry eyes, cataracts, diabetes and eye problems, far sightedness and optic neuritis. Based on these details, we can see that iron deficiency may not lead to blurry vision. However, we still need to take some measure to help iron in our body keep a normal value.