How to improve eyesight without having eye surgery?

the eye is one of the most important senses. In modern times it is very much for us to meet people who have to wear glasses because of damage to the eyes. This is because they do not keep eye. the use of a smartphone or monitor screen too close is a factor that we often encounter. actually a good visibility is not less than 30cm from the screen of a smartphone or television. And I agree to consume carrots. because carrots are the fruit that contains the necessary vitamins eye.