What is the food useful for strength of eyesight?

Diet and eyesight: Eating a balanced diet is all that is required to maintain good eyesight. People used to think that eating carrots (which contain vitamin a) is important, but you can get all the important nutrients you need by eating well.

Well balanced diet: A well balanced diet will give you all the eye nutrition you need. You don't need to eat any particular food to strengthen your eyesight.