How is the eye itch in autumn?

a: according to your description, you only have symptoms in a specific season, which may be seasonal conjunctivitis. This disease is caused by allergic factors, in layman's terms, that is, eye allergies. Anti-allergic eye drops are enough for treatment. But this can't be "rooted" and can't be rooted. Because you can't avoid allergens in the air-you can't live in a vacuum, can you? :-D。 But don't worry, it won't do any harm to your eyesight, and with the passage of time, your eyes will gradually desensitize to allergens, that is, they will gradually get better naturally.

After entering autumn, many people feel that their eyes are obviously dry, always itchy and jealous, which is probably due to dry eyes. However, they often think that this is only the result of seasonal changes, and they can endure it without medical treatment. In fact, this is not only a matter of seasons, but also a modern way of life and work.

The tear film changes and the eyes are dry

In autumn, not only the skin will be dry, but also the eyes will be dry. There is a tear film on the surface of the eye, which is secreted by lacrimal gland, meibomian gland and conjunctiva. It covers the cornea and conjunctiva, protects the cornea and conjunctiva and makes it moist. It has the function of disinfection and sterilization, and can also wash some foreign bodies. Under normal circumstances, the lacrimal gland, meibomian gland and conjunctiva secrete a proper amount of tears. By blinking, the tears are evenly smeared on the surfaces of cornea and conjunctiva to form a tear film, which plays a role in supplying nutrition, moistening eyes and enhancing eye resistance. In people with dry eye, the amount or quality of tears secreted by lacrimal glands will decrease, which will affect the stability of tear film on the surface of eyeball, resulting in dry eyes, fear of light, itching, envy and fatigue.

The tear film I * * * is divided into three layers, the outermost layer is in direct contact with the atmosphere, which is a lipid layer, the middle layer is called a water-liquid layer, and the innermost layer is a mucin layer. Correspondingly, the lipid layer is secreted by meibomian gland; The aqueous layer is secreted by the main and accessory lacrimal glands. Mucin layer is co-secreted by conjunctival goblet cells, conjunctiva and corneal epithelium. If one of these three layers is damaged or insufficient, it will be unstable, and it will not cover the surface of cornea and conjunctiva, and the cornea and conjunctiva may be dry. After entering autumn, the human body secretes less things, while the climate in vitro becomes dry, and evaporation accelerates, which will dry, thus causing dry eye syndrome.

staring at the computer and applying eyelashes are also the bane

Dry eyes are not only related to the climate. In addition to seasonal changes, modern working environment and special professional requirements are also important pathogenic factors, such as watching more computers, using eyes for a long time, lack of sleep and other factors, which is also an important reason why young white-collar workers frequently suffer from dry eye. Video terminal ophthalmopathy, which we often see, is a group of diseases caused by long-term use of computer, word processor, video game machine and other terminal screens, which affects the eyes and physical and mental health. It is also called technical tension ophthalmopathy. Most users of these video terminals work in a low temperature environment. When they look at the screen at close range for a long time, the frequency of blinking will decrease, and the tear film is formed when people blink. If you don't blink for a long time, the tear film will rupture naturally, and the cornea will be exposed to the air and dry.

For another example, many fashionable women like to apply eyelash, and apply some chemicals to the root of eyelash, which is actually at the opening of meibomian gland. The opening of meibomian gland is blocked by something, so it can't secrete liquid normally, so there will be dysfunction of meibomian gland, which will lead to instability of tear film.

dry eye ≠ conjunctivitis

Many people think that the conjunctiva is congested, and they think it is keratitis infection. After using anti-infective eye drops, they have not recovered for a long time. After a look by an experienced ophthalmologist, they find that the patient is dry eye and completely used the wrong medicine. In some hospitals, such misdiagnosis also occurs from time to time.

Actually, dry eye is a sterile disease, and it cannot be treated as infectious keratitis or conjunctivitis because of conjunctival congestion. If antibiotic eye drops are used indiscriminately, it will lead to the imbalance of bacteria in the eye and weaken the anti-infection ability of the eye for a long time.

dry eyes often shed tears

dry eyes do not mean that the eyes are dry and waterless, on the contrary, many patients with dry eyes often shed tears.

If people suffer from xerophthalmia, the basic tears secretion is low, and the dry conjunctiva causes dryness, burning and foreign body sensation, etc., these symptoms will also stimulate the lacrimal gland to secrete a large amount of tears in a short time, which exceeds the load of the lacrimal drainage system and causes paroxysmal tears.

clinically, tears caused by dry eye are generally seen in patients with mild and moderate dry eye, but severe dry eye is rare. Although the causes of various dry eyes are different and the treatment methods are different, the symptomatic treatment is to use artificial tears to make up for the lack of tear secretion. However, artificial tears are only symptomatic treatment, and can not cure dry eye. In the process of treatment, we should make clear the cause as soon as possible and actively treat the cause.