What are some of the possible causes of dry eyes in us?

Long-term use of electronic products, in life does not consume more vitamin E or lutein rich foods, intake less water, but the most important thing is because of long-term excessive eye use that leads to dry eyes.

Diet, rest, physical, work, and mental causes can cause us to suffer from dry eye syndrome, as these aspects are important for each of us and can also reflect whether a person is physically healthy or not.

Excessive use of the eyes, irregular use of the eyes, frequent computer viewing, lack of attention to eye diseases, and the causes of eye infections can all lead to dry eye syndrome.

There are many causes of dry eye syndrome, so let's first understand the composition of tears. Tears have a three-layer structure, it is a thin layer of water film, but its surface is a layer of oil, the main purpose of the oil film is to prevent the water layer inside from evaporating too quickly, the middle is a thick layer of water, and then the most surface is a mucus layer, the mucus layer is a layer of structure that allows water to adhere to the surface of the eye. So why do we get dry eyes?

There are three main reasons. The first reason is that the function of this oil film is not good, and the main organ secreted by this oil film is called meibomian glands, so meibomian gland dysfunction is one of the most common causes of dry eye syndrome, especially in elderly patients. Then the second reason is the dysfunction of the aqueous layer, that is, the amount of water in the middle is insufficient.

The third reason is the obstacle of the mucus layer, which is generally related to some underlying diseases, and the underlying diseases of the ocular surface may also be affected by the preservatives in the long-term use of eye drops. Preservatives mainly damage the secretory cells of the mucus layer, so we recommend using preservative-free eye drops, especially if you use eye drops for a long time. So there is another type of dry eye syndrome called ocular surface dynamics abnormalities, what is ocular surface dynamics abnormalities?

For example, when we are staring at the mobile phone, staring at the computer, when we are doing very engaged work, our eyes blink this action is called the blink reflex, the blink action will be reduced, when the blink is reduced, our tears are secreted from the upper temporal area, the lacrimal gland is in this position, after secretion, through the blink all over the eye surface, if you do not blink for a long time, then the function of brushing the water to the eye surface will be lost and reduced.

Dry eye, also known as keratoconjunctivitis sicca, can be caused by a variety of causes:

1. Dry eyes caused by lack of water are caused by insufficient production of aqueous tears and qualitative abnormalities, which are mostly caused by systemic factors.

2. Dry eye caused by excessive evaporation, caused by abnormalities in the quality and quantity of lipid layers, such as meibomian gland dysfunction, blepharitis, visual terminal syndrome, eyelid defects or abnormalities.

3. Dry eye caused by mucin deficiency, damage to ocular surface epithelial cells, such as drug toxicity, chemical injury, thermal burn damage to the ocular surface and limbal dysfunction. 4. Dry eyes with abnormal tear dynamics, due to abnormal tear dynamics, such as blink abnormalities, delayed tear discharge, conjunctival relaxation, etc.

You've all heard the term dry eye syndrome, but what exactly is dry eye syndrome, are you sure you know?

How many causes of dry eye syndrome? A colleague ophthalmologist said that reading this article is enough.

Vitamin A deficiency, conjunctival scarring, drugs such as antihistamines, lacrimal gland disease, connective tissue diseases such as serostasis. Dry eye syndrome is mainly with artificial tears for a long time**, and the commonly used eye fluids are new tears, Siran, and sodium hyaluronate. ]

Causes of dry eyes: dry environment, resulting in evaporation of tears; Focusing on work for a long time and blinking less often leads to less tear secretion and decreased tear quality caused by eye diseases such as conjunctivitis and keratitis.

The general symptoms of dry eye disease are dryness, burning sensation in the eyes, and more eye feces; Eye soreness, itching, photophobia, and vision loss. Other symptoms include headache, irritability, fatigue, difficulty concentrating, and in severe cases, corneal malacia perforation, and conjunctival hyperemia may be seen during examination.

1. Dry eye syndrome caused by this situation is relatively rare, and patients with congenital lacrimal gland insufficiency, lacrimal gland secretion nerve loss or underdevelopment, or congenital lacrimal deficiency can lead to too little lacrimal gland secretion of the eye and form dry eye syndrome.

2. Dry eye syndrome can also be caused by the factors of certain diseases. For example, eye trauma and trauma caused by extensive scarring of the conjunctiva, atrophy of the lacrimal gland, surgical removal of the lacrimal gland, or nasal obstruction of the lacrimal duct of the tear duct in the pendulum resulting in decreased tear secretion or no tears, resulting in dry and uncomfortable eyes.

3. Long-term work in front of the computer, or often engaged in highly concentrated work, such as driving, etc., these jobs can cause the increase of the exposed eye surface area and the decrease in the frequency of blinking during the blink, which will speed up the evaporation of tears, and it is easy to have dry eyes in the long run.

4. Vitamin A deficiency can lead to insufficient secretion of the mucin layer of the eye, so that tears and mucus can not be accompanied by moistening the eyeball, and dry eye can also occur.