Sounds like normal not so great vision. I'd be careful of easy fixes that you might find online. For example, people recommend vitamin A. Vitamin A, though, is one of the most easily abused vitamins, and can be seriously dangerous in overdose, and that's easy enough to do. Also, don't suddenly go eating a zillion eggs or red vegetables for, say, myopia.
If you are concerned about your eyes and nutrition, you might speak with your ophthalmologist (m.d. for the eyes).