Computer family needs to blink 15 times a minute
While computers have changed our lives, many people’s vision has changed quietly in front of the monitor.
Computer injury is already an indisputable fact.
According to a survey conducted by the National Institute of Occupational Health and Safety, 90% of people who work more than three hours a day in front of a computer have problems with their eyes. The symptoms are: dry eyes, headache, irritability, fatigue,Focus on concentration.
And in addition to eating and sleeping every day, almost always face the white-collar workers of the computer, how to deal with it?
The screen of a visual killer computer is made up of small fluorescent dots that are flickering. To be clear, we need to constantly adjust our eyes.
We don’t feel it ourselves, but it’s real. It’s easy to get tired when our eyes adapt to it.
When typing, the eyes should constantly be presented, the screen, the keyboard change, the focus and distance of the eyes are constantly adjusted, and the eyes will feel tired.
PSP, mobile phones, even on the shaking bus, on the crowded subway, even in the elevator, the tide of others not forget to play with the PSP, iPod or MP4, play games, watch movies, plus the habit of staring at mobile phone madnessPressing the text message and keeping a close eye on the narrow screen for a long time is also easy for people to feel tired.
Contact lenses Our corneas breathe in directly from the air, and now they are covered with a layer of “light yarn” that absorbs less oxygen.
Moreover, contact lenses are, after all, foreign objects placed on the cornea, and every movement of the eye causes a certain friction between the contact lens and the surface of the eyeball.
Therefore, continuous or continuous alignment of the contact lens will cause the cornea to be in a state of continuous hypoxia, causing edema and erosion of the corneal epithelium.
If bacteria or viruses are present, it can cause corneal ulcers and even form corneal ulcers.
Long driving eyes staring at the front, the spirit is highly nervous, this is the experience of the peak driving family every morning and evening.
With the viaduct, the in and out of the tunnel and so on can just make the eyes full of glare at all angles.
Although not enough to drive fatigue, the eyes are already very tired.
Mental stress due to bad mood, excessive stress, broken immune balance and excessive eye strength will directly affect the normal operation of the eye.
This is because when the human body is nervous, worried and depressed, the secretion of the pituitary gland and the adrenal hormone will be relatively reduced. Therefore, the binocular vision production and visual information processing functions are at a low level, which will directly lead to the crystal and the eye.Muscle contraction and diastolic steps are not coordinated.
Main features: dry eye syndrome: some people have a tear secretion of 0!
Symptoms: If you face the computer every day, there is eye soreness, fear of light, foreign body sensation, excessive secretions, etc., then you should be vigilant, because you have a major possibility of suffering from dry eye syndrome.
Expert analysis: Huang Jianning, chief physician of the Department of Ophthalmology, Zhongda Hospital affiliated to Southeast University, told the reporter that in the past, most of the middle-aged women who were suffering from “dry eye syndrome” were over 40 years old. Due to the fluctuation of estrogen levels in the body, the lacrimal gland may be invaded.The dry syndrome of exocrine glands such as glycosides is characterized by dry mouth and eyes.
Nowadays, the age of dry eye is getting younger and younger. The first priority is to use excessive eyes.
The reason why normal human eyes can maintain black and white water, in addition to its own special organizational structure, is inseparable from the moisturizing and protective effects of tears.
The wetness of our eyes is generally blinking. Under normal circumstances, we blink about 15 times a minute, but when we look at the computer, we often forget to blink because of too much concentration, resulting in excessive evaporation of tears.
How to judge whether you are normal vision fatigue or dry eye syndrome.
First, a tear secretion test and a tear film rupture time test will be performed after going to the hospital.
“The young people who came here, some tear secretions turned out to be 0!
Director Huang Jianning said that the normal standard is 10-15 mm for 5 minutes.
However, many patients will have doubts. “I obviously have tears. When I watch a movie, I will shed tears when I am emotional. Sometimes I have to cry in the wind. How can I not have tear secretion?
“, Director Huang Jianning explained that people have two sets of lacrimal glands, mainly lacrimal glands and vice lacrimal glands.
The secretion of tears during the day acts to moisten the conjunctiva and cornea of the eyeball, while when the person sleeps, the secretion of tears is stopped, which is the basic secretion, which is secreted by the accessory lacrimal gland in the general physiological condition and without stimulation.
The main lacrimal gland is responsible for the reflexive tearing, mood swings or stimulated by the cold wind, which can cause the main lacrimal gland to secrete.
Relatively wearing a contact lens, it is easy to cause the sensitivity of the corneal surface to decrease, so that the secretion of tear fluid is reduced, and it is relatively easy to have dry eye syndrome.
Retinal reflex: Young high myopia patients also need to be alert to the symptoms: one day, the visual acuity drops sharply, and the eyes seem to have a black curtain gradually covered, and finally the entire eye’s field of vision is covered.
This is the retina replacement that is very fast.
It is more likely to occur in people with high myopia (above 600 degrees) and those with traumatic eyes.
Expert analysis: As more and more patients with myopia, retinopathy is more and more, Director Huang Jianning told reporters that in the outpatient clinic, she also received some students in school, the degree of myopia is relatively high, plusCaused by predisposing factors such as mental stress.
If retinal detachment has occurred, it can only be treated surgically.
However, it is not advisable to do heavy physical work or participate in intense sports afterwards. It is not advisable to carry heavy objects and avoid collision with the eyes or head.It is recommended that patients with high myopia have an eye exam every year.
Can’t see clearly that other diseases are “alarms”.
Intracranial hemorrhage: Director Huang Jianning told reporters that she had received a case of college students, and suddenly one day I felt that there was a ghost in seeing things.
After eliminating the damage to the fundus, the expert suggested that she do a CT, and found that there was vascular rupture bleeding in the skull, the amount of bleeding was relatively small, and the oppression was oppressed to the optic nerve, which made her feel blurred vision.
Fortunately, blurred vision also reminded her to check early, the degree of vascular rupture is serious, leading to major bleeding, the consequences will be unimaginable.
Diabetes: Diabetic retinopathy is one of the common and serious complications of diabetes, and the prevalence is about 25%-50% in urban diabetic patients.
People with newly diagnosed diabetes will have transient myopia.
Because of the sudden rise in blood sugar, the osmotic pressure is high, which causes the lens of the eye to swell, and the change in refractive index causes blurred vision.
But once blood sugar is restored, vision will recover.
Many people do not know that they have diabetes, and they do not have the habit of checking blood sugar every year, leading to long-term concealment of diabetes. After many years of treatment, they found retinal hemorrhage in the fundus, and found that diabetic retinopathy was found after blood glucose was detected.
Cervical spondylosis: White-collar workers and people with slender and stressed heads work more or less with cervical problems.
Similarly, the eyes are blurred, the eyes have a feeling of pain, and there is a possibility that the cervical disc is protruding.
Because the cervical disc protrudes, it may compress the vertebral artery nervous system, causing deformation of the optic nerve edema.
This type is a relatively serious cervical spondylosis.
How to prevent more eyes from seeing more than eye drops, do not put the computer on the window, avoiding the light source from shining above the head to cause reflection, resulting in the computer screen is not clear.
Second, the height of the top of the computer screen is slightly lower than the eye level of the eye. The most ideal position is that the center of the computer screen should be about 20 degrees below the eye line of sight.
Third, the computer screen and eyes should be 60 cm away.
Fourth, often rub your eyes to increase the secretion of tears, to achieve the effect of moisturizing the eyes.
Look at the computer screen every 10 hours should rest for 10-15 minutes, if you can close your eyes, you can reach a complete rest.
Similarly, the muscles of the eyes also need to exercise. In the morning and afternoon of the day, they blink more and look far away, constantly letting the crystals relax and contract.
Or do eye exercises.
Put your hands on the eye and put it on the eyeball to have a blood circulation function.
Fifth, if the eyes are easy to dry, you can add artificial tears.
However, it is important to note that most single-packages contain preservatives, preferably no more than three times a day.
Six, pay attention to light stimulation.
Many white-collar workers like to play games at night. In order to not affect others, they often need to turn off the lights. The computer screen light directly stimulates the eyeballs, which is very harmful to the eyes.
Seven, the office tea, you can add some chrysanthemum tea, tea, green tea, cassia tea and so on.
Contact lenses cannot be placed in the following situations:
When you have a cold.
Because of the large amount of virus on the hand when you have a cold, the virus is easy to get into your eyes when you wear glasses.
In addition, many anti-cold, antitussive and analgesic drugs contain anti-shear components, tear secretion is reduced, replacement contact lenses are too dry, reduced, and slender affects vision.
Because women are in the menstrual period and the first few days of menstruation, the intraocular pressure is often higher than usual, and the eyeballs are also more prone to congestion, especially women with dysmenorrhea, when wearing contact lenses, causing adverse effects on the eyeballs.
Due to changes in female hormone secretion during pregnancy, the amount of overlap in the body has also changed, the eyelids are somewhat swollen, and the cornea becomes thicker, especially in the 3 months after pregnancy, the thickening is more obvious, and it will be matched with normal.Contact lenses do not match, causing eye discomfort.
4.When immunity is reduced.
Therefore, when the local resistance of the eye is reduced, the secretion of tears is reduced, the bacteria will multiply, and the metabolic products of bacteria are deposited between the cornea and the lens, causing the oxygen permeability of the contact lens to decrease, and the normal metabolism of the cornea is disturbed, thereby causing bacteriality.Corneal ulcers.
Be cautious when wearing colored contact lenses.
Because there are many colors inside the color film, the light is not normally transmitted to the eyes, and the special lens structure is more airtight than the ordinary contact lens, which is harmful to the eyes.
Laser surgery is not for everyone. Every time you go to the entrance exam, there are a lot of young people who go to the hospital for excimer laser surgery.
Some people even think that it doesn’t matter if the eyesight is poor. Anyway, surgery can be done before.
But if you don’t love your eyes, you may not even have the chance to have surgery.
Molecular laser correction and other corneal refractive surgery have a certain range of adaptation.
Usually, myopia is 100-1500 degrees, but patients must not be less than 18 years old, and myopia should be relatively stable for more than two years, and the annual change is preferably less than 50 degrees.
People with certain eye diseases or systemic diseases cannot perform excimer laser surgery, which is clinically divided into absolute contraindications and relative contraindications.
There are three main types of absolute contraindications: 1, keratoconus, glaucoma, severe dry eye and active diseases of the eye; 2. severe amblyopia patients with poor vision; 3, systemic diseases that affect wound healing, such as diabetes, themselvesImmune diseases, etc.
Commonly used computer degrees can be slightly lighter. Some people often have eyesight because they have better eyesight, so they are not willing to wear glasses.
But this is equivalent to wearing a pair of high heels and one foot to wear flat shoes. It is very unfavorable, and it is easy to drag the eyes with better vision.
When you are working on a computer for a long time, especially if you want to work 4 or 5 hours in front of the screen, you are advised to wear a shallow number of glasses.
This can be used less to reduce the visual fatigue.