Well, yes, vitamin a can help you to treat dry eyes. So just be careful about the intake of vitamin a. if you suffer from the vitamin a deficiency, it will be bad for dry eyes. For dry eyes, if you do not have the necessary balance of these three layers in your eyes, or if your eyes do not make enough tears to coat the eye, you may have it. So for your situation, you can take some foods which are rich in vitamins such as the fishes and some other vegetables. Also, you should know that if you have dry eyes, scratchiness, itching and burning on the surface of your eyes may occur in your eyes. so it can be dangerous.