Why I often feel like it s dark in front of my eyes

Do you have low blood sugar or blood pressure Be sure to have breakfast in the morning Eat foods that contain a lot of protein: eggs, milk, bread, don't always eat biscuits and instant noodles If you are hungry at work, you can contain a piece of vitamin sugar, which can supplement vitamins and sugar, so that your eyes will not be dark Keep sleeping It is very important to develop healthy habits from an early age.

This symptom is called orthostatic hypotension. Many people have this experience, after squatting for a long time and then standing up suddenly, they will feel dizzy and black. The main reason for this phenomenon is temporary anemia in the brain.

When people squat, the waist and legs are bent, the blood can not go up and down, if you stand up at this time, the blood will flow down quickly, resulting in local ischemia of the upper body, but the brain and eyes have particularly strict requirements for oxygen and nutrients, and they must not be slackened at all. If the body is already weak, the situation will be more serious. However, don't panic when this happens, you don't have to go to the hospital, the blood supply to the head is insufficient, the heart will immediately work hard, busy pumping blood, and it won't take long for the human body to return to normal.

Of course, be careful not to move too violently when standing up, as slowly as possible, so that the blood does not flow too violently, and the blood supply to the heart can keep up, and this phenomenon will not occur.

Most of these patients are middle-aged and elderly people, most of them are suddenly blackened in front of their eyes, and they will be fine later, and they can't find anything when they check their eyes, and finally find out that there is a problem with the cerebral blood vessels, resulting in insufficient blood supply to the brain and affecting their vision. For such patients, it is especially important to pay attention to whether there are some symptoms such as headache and dizziness at the same time as transient black door (sudden darkening) of vision. At the same time, if the eye lesion cannot be detected, you may wish to consider the possibility of cerebrovascular problems and undergo relevant examinations.

Also check for cervical spondylosis, if you are a regular driver for long periods of time.

Vasospasm of the internal carotid artery system or vertebrobasilar artery system of the brain can lead to transient ischemic attack (TIA) caused by insufficient blood supply to the brain. The internal carotid artery system mainly has blood flow to both lobes of the brain, and TIA can manifest as motor and sensory impairment on one side of the limb, and some people can produce aphasia. Ipsilateral monocular temporary amaurosis is characteristic of TIA.

These symptoms can be triggered by straining, laughing, and coughing. The vertebrobasilar artery is the main blood flow of the cerebellum and brainstem. The circulatory center, respiratory center, and arousal center are all located in the brainstem, so TIA occurs here, resulting in symptoms such as vertigo, diplopia, ataxia, balance disorders, swallowing, and speech disorders.

Since both sensory and motor nerves pass through the brainstem, hemiplegia and sensory impairment may occur during TIA. Sometimes people fall due to a sudden loss of tension in both lower limbs. These symptoms can be precipitated by rapid neck rotation, hyperextension, hyperflexion, and hypotension.

In addition to atherosclerosis, microthrombotic obstruction, blood composition and hemodynamic changes, cervical spondylosis is also one of the main ones.

It can also be caused by arrhythmia, which is mainly manifested as palpitation, cardiac arrest, intermittent pulse, blackness in front of the eyes, chest tightness, chest pain and even syncope, convulsions and other symptoms.

It is best to go to the hospital to make a clear diagnosis, take corresponding measures, and do not be careless.

Lack of exercise, resulting in a weak blood circulatory system.

As a result, once you exercise too much (the kind of excessive exercise for you, it is estimated that it will not be excessive for the average person, such as climbing, sprinting, etc.), once you exercise too much, the organs far away from the heart will have insufficient blood supply, such as the brain, and the lack of blood supply will cause hypoxia, not only temporary blindness, but also temporary unconscious symptoms, and naturally the eyes will be dark.

Therefore, you should still strengthen your exercise, whether it is walking or other exercise, for a period of time. And you can't be too picky eaters, malnutrition can also cause anemia, which is even worse.

When a person is in a squatting position, the lower limbs are flexed, and the blood vessels of the lower limbs are compressed so that the blood is not easy to flow to the lower limbs, and the lower limbs appear to be ischemia. When a person who has been squatting for a long time suddenly stands up, the blood vessels of the lower limbs are restored to unblocked, and at this time, it is like suddenly opening the floodgates, and the blood will rush to the lower limbs in large quantities, so that the head will not have enough blood, and the brain will not get enough oxygen and nutrition for a while. The conclusion is:

Most of this phenomenon is a normal phenomenon and is not caused by anemia. Reminder: 1. It is best not to squat for a long time for people with this phenomenon, if you have to squat often due to work, you can prepare a low stool in advance to reduce the degree of flexion of the lower limbs; 2. When standing up after squatting for a long time, it is advisable to stand up slowly to reduce the discomfort caused by this; Care should even be taken to clean up the work site to prevent injuries after a brief loss of consciousness and a fall to the ground.

3. It is advisable to participate in more physical exercise to enhance cardiovascular function. Why do people get dizzy when they stand up after squatting for a long time? If you squat on the ground for a little longer, and when you stand up suddenly, you often feel the world spinning and your eyes are full of stars.

This is caused by temporary anemia of the head. When a person is squatting, there are some special cases for the distribution of blood in the body. The first is that the two legs are pressed very tightly, the blood vessels are flattened, and the blood reaching the lower limbs is relatively small; Secondly, because the head is slightly tilted forward when squatting, the blood to the head is relatively more distributed.

When you stand up suddenly, the blood vessels in the lower limbs suddenly release the compression, so a significant part of the blood flows to the lower half of the body. When you stand up suddenly, the blood flow will also flow to the lower half of the body due to the attraction of gravity and inertia, and the blood distributed to the upper body will be reduced. In addition, when standing up, the head is also upright, and it is more difficult to spurt blood from the heart to the high head.

All of this results in a relative decrease in blood flow to the head. The human brain is the most in need of blood oxygen, and a temporary reduction in blood supply can make people feel dizzy due to temporary cerebral anemia. In addition, due to the decrease in blood in the head, the blood supply to the eyeballs is naturally less, so the phenomenon of dazzling and Venus will occur.

At the same time, anemia and hypoglycemia can aggravate this phenomenon. Follow-up: Is it anemia or hypoglycemia?

In general, anemia is more likely. If this persists, it is advisable to go to the hospital for a check-up. Follow-up:

Anemia and hypoglycemia How to **, what to pay attention to: Medicine** is too fake, improve diet, pay attention to eat more foods containing iron and organic sugar, iron, black fungus, animal liver, animal blood, seaweed, meat, fish and poultry. Sugars, cereals and root foods, starchy foods such as potatoes, vegetables, and fruits all contain simple sugars ....Follow-up:

Isn't it one of anemia and hypoglycemia : Yes Follow-up: Thank you.

It may be the cause of anemia, or it may be a sign of physical abnormality and illness, if this situation is sudden, it should be paid attention to, I suggest that you should go to the hospital for a full body examination, because this is generally a signal of physical abnormality, if you are in the field, there is no familiar person around you suddenly fainted in front of you, and you can't do it in time, then it will bring a very big threat to your health. <>

This situation will appear in many people in real life, and the reasons for it are also various, and different diseases may be very likely to appear such a phenomenon, and there is a high probability that it is caused by an abnormality within our body. Therefore, at this time, if you want to understand the cause and effect well, the most scientific way is to go to the hospital for a full body examination. <>

This method is the most scientific, and at present, go to the hospital to do a full body examination, the cost of physical examination is not very high, like many people have a plan for regular physical examination every year, so don't think that doing physical examination is a very big thing and don't be afraid of being found sick, because there are some diseases, which may send some abnormal signals to our body at the earliest time, but because we are afraid or we automatically ignore it, it will slowly become more and more serious. <>

Therefore, I think it is more important to detect it as early as possible, so that the prognosis will be better. If you have such a phenomenon since childhood, then it is very likely to be hereditary anemia or malnutrition, which is what kind of disease we ourselves are not professional doctors, so it is best to go to the hospital to do a check-up, so that you can know the cause and effect, so as to better prescribe the right medicine.

That's because the blood supply to the head is insufficient when you are together, so you will feel black in front of your eyes, which is normal.

It may be that the range of movements when getting up is too fast, resulting in insufficient blood circulation, so it will be dark in front of the eyes, and it is recommended to move slowly when getting up.

This is a manifestation of anemia and hypoglycemia, when you get up, slow down, don't use too much force, usually eat more nourishing food, try to eat supplements, if you are very anemic, you can also take a blood tonic oral liquid to replenish qi and blood.