What about eye allergies?
1. What are the manifestations of allergic conjunctivitis?
The typical manifestations of seasonal allergic conjunctivitis are sudden unbearable eye itching, tearing, redness, severe burning discomfort, conjunctival edema and other discomforts.
Symptoms disappear within a few hours after the allergen is removed, and if the allergen is contacted again, the above symptoms reappear immediately. These symptoms are good and bad during the allergic season, recurrent, and related to climate and patient activities. Some patients are also associated with allergic rhinitis, asthma and so on. Perennial allergic conjunctivitis patients also have the above performance, but they are all lighter than seasonal allergic conjunctivitis.
Allergic conjunctivitis is also characterized by multiple secretions, which are sticky filamentous, different from the purulent secretion of bacterial conjunctivitis, and also different from the watery or serous secretion of viral conjunctivitis.
2. Does allergic conjunctivitis affect vision?
Allergic conjunctivitis generally has no effect on vision, but in order to relieve the symptoms of itching, some patients (especially children) rub their eyes hard, may cause corneal epithelial damage and affect vision, but can be repaired, part of the serious spring khaki In patients with keratoconjunctivitis, the huge nipple formed on the conjunctiva has a damaging effect on the corneal epithelium, and even causes corneal ulcers and seriously affects vision.
3. What is the cause of eye allergies?
When the conjunctiva on the surface of the eye comes into contact with a certain sensitizing substance particle suspended in the air, an allergic reaction may occur, and these allergens are medically referred to as "allergens". When these allergens enter the eye, they bind to the mast cells of the conjunctiva, causing the mast cells to release histamine, causing redness, swelling, and itching. If you get rid of allergens in time, the symptoms can be alleviated or even disappeared. If you continue to contact, other cells in the conjunctiva are involved in the allergic reaction, causing the patient's symptoms to persist or worsen.
4. The most important thing for treatment is to avoid contact with allergens immediately, even if the drug is not used, the symptoms can be quickly relieved. If you can't detect or get rid of allergens immediately, you need to take further medication.
Localized artificial tears or saline can be used to wash the conjunctival sac to dilute the allergens, alleviating the irritation of the allergens and reducing the symptoms of itching and tearing.
There are two types of drug treatment: including mast cell stabilizers, the main function is to stabilize the cell membrane of mast cells, reduce the release of allergic factors such as histamine, such drugs have slow onset, but have the effect of relieving symptoms and preventing allergies; H1 receptor blockers, mainly to alleviate allergic reactions caused by histamine, have obvious antipruritic effect; if the symptoms are not relieved after treatment, glucocorticoid eye drops can be used for a short time.
5. How to prevent allergic conjunctivitis?
First of all, we must improve the living environment, thoroughly clean indoor hygiene, reduce dust, pay attention to indoor ventilation, change sheets, pillows, and do not keep pets, so that the effects of allergens are alleviated.
For those who are allergic to outdoor antigens such as pollen, try to reduce outdoor activities or use goggles during the pollen season.
Secondly, to exercise, enhance physical fitness, regular life and work, pay attention to healthy and appropriate diet, these can make the body's potential to fight allergic attacks, reduce, slow down allergic attacks.
Tips: Patients with allergic conjunctivitis should try to avoid blinking, because the stimulation of blinking can release more allergic factors, make the eyes more itchy, and allergic symptoms worse.
For patients with severe symptoms, patients who have not been relieved after many years of treatment may consider changing their living environment, such as moving to another city to live, so that they may be separated from allergens and receive better symptoms of itching, tearing, and foreign body sensation. There is no specificity. Once visual impairment occurs, you should first go to an ophthalmologist for a formal examination and diagnosis.
