Eyes are sensitive. Itchy eyes are likely itching because of allergy. They might need lubrication, if they are also dry, with drops formulated for the eyes (there are a variety of brands over the counter). Don't use toothpaste for this problem! Consult an allergist to try to learn if an allergen may be triggering the itch which you could try to eliminate from your environment or get treatment for & an opthamologist as to what they recommend to alleviate the itching.