dry eyes
Introduction
Introduction The term "dry eye syndrome" refers to a symptom of a slight scar on the surface of the eye due to a decrease in tears or a decrease in the function of the lacrimal gland. Since it is in an air-conditioned environment for a long time, the moisture in the eyes is easily drained.
Cause
Cause
The cause of dry eyes:
It can be caused by a lack of vitamins in the body, or a decrease in the secretion of middle-aged people due to hormonal changes; in addition, obstruction of the lacrimal gland also has the opportunity to cause dry eyes. The main symptoms are dry eyes, foreign body sensation, red eyes, itching or pain. If not treated properly, a small number of people may cause corneal inflammation due to damage to the corneal epithelial layer, which may impair vision.
Examine
an examination
Related inspection
Ophthalmic examination eye function examination
Inspection of the dry eye:
Under normal circumstances, our average blink rate is 20 times per minute, and when staring at the flashing screen, the frequency of blinking is significantly reduced, only 4-5 times per minute, which causes the cornea and conjunctiva to be exposed for a long time. In the air, the tears do not get wet in the blink of an eye, but also affect the function of the tear film, making the eyes feel dry.
In addition, because the computer screen is composed of small fluorescent dots, the eye must constantly adjust the focal length to ensure that the vision is clear, and the eye muscles are too tired. The electromagnetic wave, ultraviolet light, radiation, glare color and infrared rays of the computer screen will also irritate the eyes. It will cause strong flashing, which will cause the photoreceptor on the retina of the eye to consume too much purple, which will cause dry eyes, fatigue, and ghosting. Blurred vision, severe cases will lead to cornea, conjunctival epithelial cells sequential keratinization, lacrimal gland secretion cells also occur lesions, dry eyes are afraid of light, do not dare to blink. If the disease develops rapidly, it can cause corneal perforation within a few weeks, leading to blindness.
Diagnosis
Differential diagnosis
Symptoms of eye dryness:
Eyes dry and sour: the old eyes feel dry, look at a book or TV, computer, the eyes are very tired, sore, and the hands and feet are easy to numb. This is the initial symptom of liver blood deficiency, and we should not care about it. Because the blood is a big loss, all kinds of serious diseases on the liver and gallbladder will not be brought up.
Eye irritation: There are many causes of eye irritation. Corneal diseases can be caused. The normal eye surface is covered with a tear film, which is the basis for maintaining healthy and comfortable ocular surface. White-collar workers are staring at the computer for a long time, their concentration is high, their eyelids are wide open, and the tear evaporation increases more than usual. At the same time, the number of blinks is greatly reduced, resulting in insufficient moisture on the surface of the eyeball, and the radiation of the screen light is easy to appear. The eyes are dry and stinging.
Under normal circumstances, our average blink rate is 20 times per minute, and when staring at the flashing screen, the frequency of blinking is significantly reduced, only 4-5 times per minute, which causes the cornea and conjunctiva to be exposed for a long time. In the air, the tears do not get wet in the blink of an eye, but also affect the function of the tear film, making the eyes feel dry.
In addition, because the computer screen is composed of small fluorescent dots, the eye must constantly adjust the focal length to ensure that the vision is clear, and the eye muscles are too tired. The electromagnetic wave, ultraviolet light, radiation, glare color and infrared rays of the computer screen will also irritate the eyes. It will cause strong flashing, which will cause the photoreceptor on the retina of the eye to consume too much purple, which will cause dry eyes, fatigue, and ghosting. Blurred vision, severe cases will lead to cornea, conjunctival epithelial cells sequential keratinization, lacrimal gland secretion cells also occur lesions, dry eyes are afraid of light, do not dare to blink. If the disease develops rapidly, it can cause corneal perforation within a few weeks, leading to blindness.
