Allergy is one of the most common diseases worldwide. The basic principle is that the body has a hypersensitive reaction when exposed to allergens that are present in the environment around it. It is an inflammation of the eye area caused by an allergic reaction of the conjunctiva to an allergen, which causes red, irritation, itchy, tearful eyes and sensitivity to light. Allergic conjunctivitis is a common problem. Although it does not affect vision, it can irritate the eyes and affect the patient’s quality of life.

Allergic สนใจสมัคร? คลิกที่นี่เพื่อเริ่มต้น symptoms often occur in the eyes because the eyes are organs with a rich blood supply. These blood vessels respond easily to allergens. Importantly, the eyes are exposed to the outside environment. When you are exposed to allergens such as pollen, dust, animal dander, medicine, cigarette smoke, those allergens dissolve in tears and return to the conjunctiva, which creates an anti-allergic substance called Antibody IgE. When the antibody binds to the antibody, it releases various substances, causing an allergic reaction in your eyes, causing irritation, redness, and watery eyes.
Common symptoms of allergic conjunctivitis may occur in both eyes, as follows:
- Eye irritation, feeling like there is a foreign object in the eye , and itching
- The whites of the eyes are pink or red.
- Moist eyes or excessive eye mucus due to increased fluid in the eyes
- Swollen eyelids, which usually occur in the morning.
- Photophobia
Some people may also experience other symptoms, such as a stuffy nose, runny nose, and sneezing. You should immediately avoid allergens. Sometimes you may need to wash your eyes with clean water. You may use artificial tears which will help wash out allergens. Use a cold cloth to cover your eyes. Avoid rubbing your eyes because it will cause more severe inflammation and make it even more itchy. To reduce swelling, you may buy antihistamines to take.
If taking care of yourself does not help, you should see a doctor immediately if the following symptoms occur:
- Severe pain around the eye
- The eyes become increasingly red.
- Pain in the eye area when exposed to sunlight and light.
- There are bumps or blisters around the eyes, eyelids, or nose.
- Decreased visual acuity
Causes of allergies come from genetics, pollution, lack of exercise, and the environment in your home or workplace, such as raising animals, laying carpets, and using air conditioners, which are sources of dust and dust mites.