With the change of
seasons and the cooler weather, some netizens said they had allergic conjunctivitis again. “The high incidence of allergic conjunctivitis occurs in spring and autumn every year.” Bai Yawen, an ophthalmologist at Beijing Shijitan Hospital of Capital Medical University, said that according to the feedback from the allergy department of the hospital, when the weather is not cool in autumn, it is mainly caused by some plants in autumn. When the weather turns cool, more patients are allergic to cold air. The most common symptom of
allergic conjunctivitis is itchy eyes, the most common sign is conjunctival congestion, mild white eyeballs become light pink, severe blood vessels thicken and bulge, other symptoms include tears, burning sensation, photophobia and increased secretion.
“Some patients with allergic conjunctivitis think that it is better to endure the allergic season.”. In fact, if not treated in time, the eyes will be in a state of congestion and swelling for a long time, which will cause damage to the ocular surface or eyes, such as the decline of the stability of tears and tear film, corneal damage and so on. Jieying, chief physician of the Department of Ophthalmology and Cornea of Beijing Tongren Hospital Affiliated to Capital Medical University, once said that for some patients with severe allergic conjunctivitis, doctors may use hormone eye drops. Some people will have high intraocular pressure after medication, and long-term use may cause drug-induced glaucoma. “Regular follow-up and monitoring of intraocular pressure must be carried out during medication.”
Jieying reminds patients with allergic conjunctivitis not to abuse eye drops. After some eyedrops are used, the symptoms are indeed relieved, but this relief will cover up the disease itself, and may even lead to aggravation of the disease. For example, an eyedrop whose main ingredient is tetrahydrozoline hydrochloride has the effect of contracting blood vessels. After using it, you can feel the relief of symptoms soon. This effect is temporary. Once the drug effect has passed, it will rebound, leading to the aggravation or even deterioration of allergies. There are also some eye drops containing neostigmine methyl sulfate, which has a similar effect of contracting the pupil, can make the eyes bright, its mechanism of action will affect the ciliary muscle, long-term use may lead to visual fatigue, resulting in eye dependence on drugs, but also produce toxic side effects. “Most eye drops will add preservatives to varying degrees, long-term use will cause the tear film lipid layer, including the water layer, protein layer damage, and eventually lead to more rapid evaporation of water on the ocular surface, but cause allergic conjunctivitis to aggravate or delay cure.” Jieying stressed.
“To prevent allergic conjunctivitis, patients should pay attention to personal hygiene and eye hygiene, wash hands and face frequently, do not rub eyes with dirty hands; pay attention to indoor environmental hygiene, frequent ventilation, frequent cleaning to clean up indoor dust, mites, etc.; frequently change sheets, quilts and pillow towels;”; Avoid using eye cosmetics as much as possible. It is better not to wear contact lenses, especially cosmetic contact lenses. If you have to wear them, you should shorten the wearing time as much as possible. Patients with allergic constitution or rhinitis who will be aggravated by cold air can apply anti-allergic eye drops in advance, which can alleviate allergic symptoms. Bai Yawen pointed out.
