Since you catch itchy eyes, you want to scrach it. However there are many reasons. In most cases, itchy eyes is caused by allergy. One allergy is temporary, that is, it often happens in particularly seson like spring. The other is perennial allergy. Besides dry eyes can also lead to itchy eyes. So to solve you problem, first you need know the reason. Since most itchy eyes is caused by allergy, you had better stay away from allergen, such as grass, trees, mold, dust, pet and so on. You can buy eye drops to relieve itchy. If your condition goes worser, you should go to see the doctor.