Why do people's eyes water?

Eyes - this is the most sensitive human organ, which is easily affected by external factors, it reacts to irritants and to the overall well-being of a person. Defending himself from irritation, he watered, with such a feature every person met. But there are several reasons why your eyes water.

Tear of the eyes is a normal physiological process. They water most often on the street. Wind, frost, heat, sunlight - all these are natural irritants for our bodies of sight. The fact that the eyes are watered even at the entrance to the room, gives discomfort to people, especially women who use cosmetics. The eyes are still inflamed and swollen.

Protect yourself from the bright sun and the wind with sunglasses, but you can not hide from the frost.

From the frost and wind the tear duct narrows, because of this the flow through this channel decreases and, not having time to get into the nasopharynx, tears come to the surface. In the wind, our vision organs are protected, enhancing the release of liquid, which helps to protect against dust and dirt.

When is the reason why the eyes are watery, is a normal physiological process?

The above-mentioned reason is a reaction to weather conditions, it is quite a natural process, but there are other reasons for this phenomenon. There are tears when we cry, yawn, after sleep. These are manifestations of normal human physiology. Why do your eyes water in the morning? Thus, the body moisturizes the eyeball that has dried during sleep.

Why are your eyes watery if it's not about physiology? There are some diseases, one of the symptoms of which is tearing. This happens regardless of weather conditions and physiological factors. Such pathologies include:

1. Conjunctivitis and other pathologies, characteristic of the change of seasons. The cause of such diseases is an infection that provokes inflammation of the eyeball.
2. Allergy. Some types of allergies contribute to the fact that the eyes swell, water and inflame. Thus, sensitivity to fluff, odors, dust, animal hair is manifested.
3. Viral and infectious diseases. ARI, influenza, angina are accompanied not only by coughing, runny nose, but also by tearing.
4. Foreign body. A cilium, a hair, a grain of sand may enter the eye , which will cause such a reaction of the body. Remove the irritant only with a clean handkerchief or tissue.
5. With a long view of the TV, hard work on the computer, reading books. The eyes are watery because the blinking becomes rare at a time when humidification occurs. The eyeball dries up and the body reacts - tear, the purpose of which is to moisturize the parched shell.
6. Lack of vitamins in the body. The lack of potassium and vitamin B2 leads to rapid fatigue, poor health, reduced immunity and a painful condition.

Ophthalmologists note that due to the tear film on the cornea, which is updated by the intake of fresh fluid from the lacrimal gland, the sharpness of the vision does not drop below 80%.