Why is it that the light reflex disappears when one side of the optical nerve is damaged?
When one side of the optical nerve was injured, the direct light reflex of the affected pupil disappeared, but the indirect light reflex existed. This was because the optical nerve was responsible for transmitting the light signals sensed by the retina to the central nervous system. When one side of the optical nerve was damaged, the light signals could not be transmitted normally through this pathway, resulting in the pupil on the other side not being able to make a direct contraction response after receiving light stimulation, that is, the direct light reflex disappeared. The indirect light reflex was transmitted through the opposite side of the optical nerve. The uninjured side of the optical nerve could still transmit light signals normally, so that when the opposite eye received light stimulation, the nerve impulse could be transmitted to the affected side of the oculnar nerve through the optical chiasm, causing the affected side's pupil to have an indirect light reflex. Therefore, the indirect light reflex existed. The common causes of a single side of the optical nerve injury included brain trauma, optical neurosis, and fractures of the optical canal. Read more exciting novels for free
Will it recover after the light reflex disappears?
Whether the disappearance of the pupil's light reflex could be recovered depended on the cause of its disappearance. In some cases, it could be recovered, but in some cases, it was difficult to recover. From the perspective of diseases, diseases such as optical neurosis, stroke, and multiple stiffen may affect the normal function of the pupil's light reflex. By treating the primary disease, the pupil's light reflex may be restored. From the perspective of drugs, some drugs such as atropine may cause the pupil's light reflex to disappear. Generally, the pupil's light reflex will gradually recover after stopping the drug. In terms of damage, eye or head trauma, surgery, etc. may damage the neural pathway of the pupil's light reflex, causing the pupil's light reflex to disappear. In this case, the possibility of recovery depends on the degree and location of the injury. In some cases, it may be permanently lost. If the pupil's light reflex disappears for a long time, or is accompanied by other symptoms, such as decreased vision, eye pain, etc., you should seek medical advice in time to determine the cause and receive appropriate treatment. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The left eye's optical nerve was cut off, and the right eye's indirect light reflex was weakened.
Optic nerve severing was a serious injury to the optical nerve. After the left eye's optical nerve was cut off, the direct light reflex of the left eye disappeared, and the indirect light reflex of the right eye weakened. This was because the optical nerve was a part of the central nervous system. The damage to the central nervous system could not be regenerated. Cutting off the optical nerve in the left eye would affect the normal function of the entire visual transmission pathway, resulting in this abnormal phenomenon of light reflex. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The nerve reflex process of defecation
The defecation reflex was a reflex action of the internal organs. When the feces fell into the anus, it would stimulate the wall of the anus. Through reflex, it would cause a series of wriggling movements in the descending colon, sigmoid colon, and anus. At the same time, it would relax the internal and external constrictors of the anus canal and contract the abdominal wall muscles, thus expelling the feces. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What kind of nerve reflex is farting?
There were two main aspects of the neural reflex process involved in farting. On the one hand, muscle contraction and pressure changes led to the nervous reflex when gas was discharged. When people laughed, the abdominal muscles contracted and the pressure changed. This change could push the gas in the intestine to the anus and discharge it. During this process, the nervous system regulated the muscle contraction and pressure changes, so that the gas in the intestine was discharged. On the other hand, the nerve reflex mechanism causes the anus to relax. Laughter, as an emotional response, can activate the autonomous nervous system, which may cause the muscles of the anus to relax, making it easier for the gas in the intestines to be discharged, resulting in farting. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Is there any effect on light reflex in patients with optical neurosis? How is it treated?
The reference materials did not mention whether or not the light reflex was affected by optical neurosis, so it was impossible to accurately answer this part of the content. The treatment for optical neurosis was as follows: 1. Treatment of the primary disease: If the optical neurosis is caused by other diseases such as an auto-immune disease or an infectious disease, treating these primary diseases is the key. For example, infectious optical neurosis should be treated according to different pathogenic factors. If it was caused by bacteria, it should be treated with antibiotics, and if it was caused by malaria, it should be treated with anti-malaria drugs. If it was caused by an auto-immune disease (such as multiple stiffen and systematic Lupus erythemarius), it might need to be treated with immune suppressors. 2. Medication: - Steroids (steroids) may be taken by mouth or injected to reduce inflammation and symptoms. If the general condition permits, the whole body may be given a shock treatment with steroids. At the same time, the side effects of steroids should be avoided as much as possible, such as taking measures such as preserving potassium, replenishing calcium, and protecting the gastric mucus. - If it was caused by an infection, such as a bacteria infection, antibiotics should be used, and a viral infection should be treated with antivirals. 3. Surgery: In some cases, such as when the optical nerve inflammation is caused by a brain tumor or other increased pressure in the brain, surgery may be necessary. 4. Restorative treatment: Optic Neurisy may lead to the loss of vision. Restorative treatment can help the patient readjust to the visual function, mainly including visual training, auxiliary equipment, and psychological support. 5. [Other treatments: Nowadays, there are methods such as immune targeted therapy, plasma exchange therapy, and nutritional nerve therapy.] If there is an infectious disease around the optical nerve, anti-infectious treatment should be given. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Can optical neurosis cause light reflex dullness? How is it treated?
Optic neurosis may cause a slow response to light. The treatment for optical neurosis was as follows: 1. Medication: - As for the optical neurosis caused by auto-immune diseases, hormones were generally used to treat it, which could eliminate the edema of the optical nerve and quickly improve vision. As for infectious diseases (such as sinusies and other optical neurosis caused by infection), it was necessary to actively control the infection and carry out anti-infectious treatment. For special diseases (such as optical neurosis caused by pneumonias, malaria, and other diseases), the primary disease should be treated first. After the primary disease was controlled, hormone therapy should be supplemented. - Steroids can reduce inflammation and edema and improve vision; immune suppressors can suppress the immune response; neuronutritional drugs can promote the recovery of the optical nerve. - If the general condition allowed, the whole body should be given a shock therapy with steroids. At the same time, the side effects caused by steroids should be avoided as much as possible, such as treatment measures such as preserving potassium, supplementing calcium, protecting the gastric mucus membrane, and nutritional neurotherapy. 2. Treatment of the cause: If there is infectious disease around the optical nerve, anti-infectious treatment should be given; for patients with clear cause of periorbital infection or confirmed to have toxic causes, treatment should be targeted at the cause of the disease. 3. Surgery may be needed for optical neurosis caused by tumors or trauma. Surgery methods include removing the tumor and repairing the optical nerve. In the treatment of patients with acute neuromyelia or neuromyelia spectrum disorder, plasma exchange was used and showed some clinical effects. The principle was to achieve the treatment effect by separating and replacing the components in the patient's blood plasma (the process was that the patient's blood was extracted, the blood cells and plasma were separated, and the plasma was replaced with fresh plasma or plasma replacement fluid before being re-injected into the patient's body). In addition, it was supplemented with neuronourishment and protection, as well as treatment to improve the microcirculatory system. Severely ill patients may need surgery. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Does the nerve center of reflex have a brain?
Yes. The nerve center was distributed in various parts of the central nervous system, including the brain, spinal cord, marrow, pontine, midbrain, upper and lower hypochondrium, cerebrum, and other different nerve tissues. Reflex activity required the participation of the nerve center, so the nerve center of reflex was the brain. For example, the respiratory center existed in many parts of the brain, such as the oblongata, pontine, and even the cerebral cortices. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Why is the nerve center of reflex located in the brain?
Not all reflexes were located in the brain. Simple reflexes such as the knee jerk reflex had a low-level nerve center located in the gray matter of the spinal cord. The nerve center of complex reflexes was mainly located in the brain. The nerve center of conditioned reflexes was mainly located in the cerebral cortices and subcortices because these parts were the high-level nerve centers that participated in complex reflex activities. In the central nervous system, the nerve center was formed by the collection of nerve cells with the same function. Its role was to regulate the corresponding physiological activities of the human body. For some complex physiological functions, such as learning and quenching thirst, it required the high-level centers of the brain (such as the prefrontal lobe and limbic system of the cerebral cortexes) to participate in the transmission of nerve signals, analysis and synthesis, so as to connect the originally unrelated stimulation with a specific response. Therefore, the nerve center of complex reflexes was located in the brain. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Left eye indirect reflex disappears how to return a responsibility ah how to treat
The loss of indirect reflex in the left eye could be caused by many reasons. First of all, he had to consider whether he had recently come into contact with dilated drugs. Secondly, he had to see if he had a history of trauma, especially brain and eye trauma. When the eye socket was hit by an external force, the oculomotonic nerve might be damaged, which might affect the pupil's light reflex ability, and then the indirect light reflex would disappear. He also had to see if it was a stiff pupil. There were many causes, and idiopathic was the most common, followed by trauma, surgery, virus or infection. In addition, it could also be caused by epilepsy or pathological changes in the optical nerve. It could also be caused by damage to the oculoric nerve because the oculoric nerve was involved in the pupil's light reflex. This could happen if it was damaged. If such a situation occurs, it is recommended to go to the hospital for a relevant examination in time. If it was caused by damage to the oculomotatory nerve, it could be treated with mecobalamin tablets, oryzantine tablets, and other drugs according to the doctor's advice to help nourish the nerves. In daily life, you need to pay attention to rest more, avoid excessive use of your eyes, and at the same time pay attention to healthy diet to ensure that the diet is balanced, which will help speed up recovery. However, the specific treatment plan needed to be determined by the doctor according to the specific cause of the disease and the individual condition of the patient. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the side effects of drugs for brain nerve damage and recovery?
Different types of brain damage and recovery drugs had different side effects: - "Vitamin B1 and mecobalamin: These two drugs can be used for the treatment and nourishment of nerve damage. However, if they are not taken according to the course of treatment, there may be accumulation of ingredients in the body, resulting in side effects such as rashes, diarrhea, headache, chest tightness, and decreased blood pressure. Moreover, one could not drink alcohol during the period of taking the medicine. Alcohol might interfere with the effect of the medicine and bring new inflammation to the damaged nerves. It would also cause the drug components to be digested with the urine after drinking too much, making it difficult to produce the effect. - Nutrient brain nerve drugs: There may be adverse reactions in the digestive tract, such as abdominal distension, nausea, vomiting, diarrhea, etc., but it will usually improve naturally after stopping the drug. - Glycopeptides (e.g., vancomycin-based, vancomycin-based, and teinoplanin): These drugs can cause damage to the eighth cerebral nerve if used incorrectly, resulting in dizziness, ringing in the ears, and even hearing loss. - Phencyclidine drugs: It has a sedative effect, but it may cause serious mental decline, perceptual errors, and double visual effects. Large amounts of it may also cause coma and death. - Psychiatrist drugs: - The central nervous system may have drowsiness, fatigue, headache, agitation, irritability, insomnia, and so on. - In the cardiovascular system, there may be complications such as bradycardias and orthostatic low blood pressure. - The digestive system may have nausea, acid aversion, abdominal distension, and so on. - In terms of the hormonal system, there may be weight gain/loss, menstrual imbalance, and abnormal nail function; - Extrapyramidal reactions may include local stiffness, muscle spasms, etc. There are also some special adverse reactions such as 5 - HT syndrome, Metabolic Syndrome, and depletion of granules. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>