In our daily life, we often encounter some eye discomfort and sadness. Among them, itchy eyes are one of the more frequent ones. So, what causes itchy eyes? What is the right way to deal with it? Most friends encounter itchy eyes, take the dragging method, itchy rub, or take a bottle of drops themselves, rather than go to the doctor. Of course, some of these cases can be self-healing, but, in most cases, this approach can only delay treatment, and even make some acute diseases become chronic. Itchy eyes are most often seen in inflammatory eye lesions, such as conjunctivitis, blepharitis, dry eye, allergies or contact dermatitis. Conjunctivitis is a common ophthalmic condition, an inflammation of the conjunctiva caused by infection by pathogens. Common symptoms include eye redness, foreign body sensation, and burning sensation in addition to itchiness. In the morning, there is a lot of discharge from the eyes, and sometimes it is difficult to open the eyes because of the thick and sticky discharge. In this case, you should go to the hospital for eye examination and treatment, and wash your hands and face regularly, and do not rub your eyes with your hands to avoid cross-infection of both eyes. Do not share towels and other supplies with family members. Some places are prone to conjunctivitis, such as swimming pools and public bathrooms, so you can use antibiotics and antiviral eye drops prophylactically after using public baths and pools to avoid contracting conjunctivitis. If the itchy eye occurs not on the eyeball but on the eyelid and corner of the eye and there is no visible discharge, you may have blepharitis. Blepharitis is primarily an inflammation of the edges of the eyelids or the inner and outer corners of the eyes, near the root of the eye hairs. The main symptom is a distinct itching and burning sensation in the eyelid area. The lid margin is rich in glandular tissue and fatty secretions that can easily become infected with dirt and germs. This eye disease generally has a long course and requires consistent medication. People with refractive errors (myopia, hyperopia, and astigmatism), frequent mascara use, or poor hygiene habits are prone to blepharitis. Another common eye disease that can cause itchy eyes is dry eye. Dry eye is an ocular surface lesion caused by insufficient or unstable tear production and is associated with prolonged use of computers, television, and contact lenses. In the early stages of dry eye, most dry eyes can be relieved by proper rest and the use of artificial tears and other medications. However, dry eye that is not effectively treated over a long period of time can reduce the number or activity of some functional cells on the surface of the eye, which can eventually further exacerbate dry eye and make it more difficult to treat. Contact blepharitis is an allergic reaction of the eyelid skin to an allergen or part of an allergic reaction to the skin of the head and face. This eye disease is the result of eyelid skin contact with an allergen. Common allergens are topical antibiotics and other medications, chemicals, such as makeup dyes, hair dyes, trip creams, and eyeglass frames. Patients experience itching and burning sensations in the eyes. In acute cases, the eyelid becomes suddenly red and swollen, and the skin develops papules, blisters or pustules with a yellowish, mucousy exudate. This condition should be seen by an ophthalmologist immediately and requires the use of cold compresses and anti-allergy medications, etc. When symptoms of itchy eyes appear, it is best to see a doctor as soon as possible. Taking some inappropriate methods to deal with the condition on your own will most likely delay the treatment of the disease and cause unnecessary trouble in your life.