What causes itchy eyes? Causes of itchy eyes

Itchy eyes are very common in clinical practice, and this condition is related to many reasons. As for what causes itchy eyes, it is not ruled out that it is related to some lifestyle habits. For example, wearing contact lenses for a long time may cause bacterial infection in the eyes, resulting in itchy eyes.

1. Wearing contact lenses for a long time causes itchy eyes

After all, contact lenses are foreign substances. Wearing them for a long time will cause certain damage to the cornea and may also cause dry, itchy, sore and swollen eyes. In addition, contact lenses are easy to carry bacteria. If you do not pay attention to the hygiene of contact lenses, do not scrub them with care solution, or wear contact lenses with dirty hands, etc., your eyes will be infected by bacteria, causing itchy and painful eyes.

2. Abuse of eye drops causes itchy eyes

Many people will abuse eye drops when their eyes are uncomfortable, but they don’t know that eye drops also contain preservatives or hormones and should not be abused. Long-term abuse of eye drops will reduce the resistance of the eyes, lead to eye allergies, blisters and papules on the eyelids, itchy eye skin, and in severe cases, there will be a burning sensation, and it often causes redness and swelling of the eyelids.

3. Rubbing your eyes with your hands causes itchy eyes

Many people will unconsciously rub their eyes with their hands when they feel eye discomfort, which makes the eyes easily infected by the bacteria on the hands. Especially unwashed hands carry a large number of bacteria and fungi, which can easily infect the eyes and cause inflammation. A US study found that a pair of unwashed hands may harbor hundreds of thousands of bacteria, which can lead to various eye diseases, especially conjunctivitis and trachoma.

4. Swimming causes itchy eyes

Dry and itchy eyes are also common after swimming, especially after long periods of swimming. This is because the water in many swimming pools is disinfected with bleach, which produces chlorine. The contact between the eyes and chlorine will have a certain irritation to the eyes, resulting in dry eyes, itchy eyes, itchy skin, etc. after swimming.